55647256 has 32 divisors (see below), whose sum is σ = 126260640. Its totient is φ = 22445568.

The previous prime is 55647233. The next prime is 55647271. The reversal of 55647256 is 65274655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28275 + ... + 30178.

It is an arithmetic number, because the mean of its divisors is an integer number (3945645).

Almost surely, 2^55647256 is an apocalyptic number.

55647256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55647256 is an abundant number, since it is smaller than the sum of its proper divisors (70613384).

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

55647256 is a wasteful number, since it uses less digits than its factorization.

55647256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58483 (or 58479 counting only the distinct ones).

The product of its digits is 252000, while the sum is 40.

The square root of 55647256 is about 7459.7088415031. The cubic root of 55647256 is about 381.7812403894.

The spelling of 55647256 in words is "fifty-five million, six hundred forty-seven thousand, two hundred fifty-six".