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55136214 = 235719853
BaseRepresentation
bin1101001001010…
…0111111010110
310211202012200000
43102110333112
5103103324324
65245432130
71236435660
oct322247726
9124665600
1055136214
1129139721
121656b646
13b5661a3
147473530
154c919c9
hex3494fd6

55136214 has 96 divisors (see below), whose sum is σ = 149210880. Its totient is φ = 14906592.

The previous prime is 55136189. The next prime is 55136227. The reversal of 55136214 is 41263155.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64212 + ... + 65064.

It is an arithmetic number, because the mean of its divisors is an integer number (1554280).

Almost surely, 255136214 is an apocalyptic number.

55136214 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55136214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74605440).

55136214 is an abundant number, since it is smaller than the sum of its proper divisors (94074666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55136214 is a wasteful number, since it uses less digits than its factorization.

55136214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 884 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 55136214 is about 7425.3763540982. The cubic root of 55136214 is about 380.6089359621.

Adding to 55136214 its reverse (41263155), we get a palindrome (96399369).

The spelling of 55136214 in words is "fifty-five million, one hundred thirty-six thousand, two hundred fourteen".

Divisors: 1 2 3 6 7 9 14 18 19 21 27 38 42 54 57 63 81 114 126 133 162 171 189 243 266 342 378 399 486 513 567 798 853 1026 1134 1197 1539 1701 1706 2394 2559 3078 3402 3591 4617 5118 5971 7182 7677 9234 10773 11942 15354 16207 17913 21546 23031 32319 32414 35826 46062 48621 53739 64638 69093 97242 107478 113449 138186 145863 161217 207279 226898 291726 322434 340347 414558 437589 483651 680694 875178 967302 1021041 1312767 1450953 2042082 2625534 2901906 3063123 3938301 6126246 7876602 9189369 18378738 27568107 55136214