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55152906 = 2331614861
BaseRepresentation
bin1101001001100…
…1000100001010
310211210001120020
43102121010022
5103104343111
65250041310
71236535434
oct322310412
9124701506
1055152906
1129150216
1216579236
13b570973
147479654
154c96906
hex349910a

55152906 has 32 divisors (see below), whose sum is σ = 115754496. Its totient is φ = 17496000.

The previous prime is 55152893. The next prime is 55152907. The reversal of 55152906 is 60925155.

It is not an unprimeable number, because it can be changed into a prime (55152907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8916 + ... + 13776.

It is an arithmetic number, because the mean of its divisors is an integer number (3617328).

Almost surely, 255152906 is an apocalyptic number.

55152906 is an abundant number, since it is smaller than the sum of its proper divisors (60601590).

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

55152906 is a wasteful number, since it uses less digits than its factorization.

55152906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 55152906 is about 7426.5002524742. The cubic root of 55152906 is about 380.6473407472.

The spelling of 55152906 in words is "fifty-five million, one hundred fifty-two thousand, nine hundred six".

Divisors: 1 2 3 6 31 61 62 93 122 183 186 366 1891 3782 4861 5673 9722 11346 14583 29166 150691 296521 301382 452073 593042 889563 904146 1779126 9192151 18384302 27576453 55152906