55956657 has 4 divisors (see below), whose sum is σ = 74608880. Its totient is φ = 37304436.

The previous prime is 55956647. The next prime is 55956661. The reversal of 55956657 is 75665955.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55956657 - 2⁷ = 55956529 is a prime.

It is a super-2 number, since 2×55956657² = 6262294925231298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55956647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9326107 + ... + 9326112.

It is an arithmetic number, because the mean of its divisors is an integer number (18652220).

Almost surely, 2^55956657 is an apocalyptic number.

It is an amenable number.

55956657 is a deficient number, since it is larger than the sum of its proper divisors (18652223).

55956657 is a wasteful number, since it uses less digits than its factorization.

55956657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652222.

The product of its digits is 1417500, while the sum is 48.

The square root of 55956657 is about 7480.4182369704. The cubic root of 55956657 is about 382.4875061065.

The spelling of 55956657 in words is "fifty-five million, nine hundred fifty-six thousand, six hundred fifty-seven".