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55137670 = 2572321489
BaseRepresentation
bin1101001001010…
…1010110000110
310211202021122221
43102111112012
5103103401140
65245442554
71236443140
oct322252606
9124667587
1055137670
112913a825
121657045a
13b566a53
147473c90
154c9214a
hex3495586

55137670 has 48 divisors (see below), whose sum is σ = 118651680. Its totient is φ = 18070272.

The previous prime is 55137637. The next prime is 55137673. The reversal of 55137670 is 7673155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55137673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36286 + ... + 37774.

It is an arithmetic number, because the mean of its divisors is an integer number (2471910).

Almost surely, 255137670 is an apocalyptic number.

55137670 is an abundant number, since it is smaller than the sum of its proper divisors (63514010).

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

55137670 is a wasteful number, since it uses less digits than its factorization.

55137670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 55137670 is about 7425.4743956194. The cubic root of 55137670 is about 380.6122862207.

The spelling of 55137670 in words is "fifty-five million, one hundred thirty-seven thousand, six hundred seventy".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 529 805 1058 1489 1610 2645 2978 3703 5290 7406 7445 10423 14890 18515 20846 34247 37030 52115 68494 104230 171235 239729 342470 479458 787681 1198645 1575362 2397290 3938405 5513767 7876810 11027534 27568835 55137670