55707864 has 32 divisors (see below), whose sum is σ = 140280000. Its totient is φ = 18434592.

The previous prime is 55707809. The next prime is 55707893. The reversal of 55707864 is 46870755.

It is a super-2 number, since 2×55707864² = 6206732222884992, which contains 22 as substring.

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, 5014 + ... + 11685.

It is an arithmetic number, because the mean of its divisors is an integer number (4383750).

Almost surely, 2^55707864 is an apocalyptic number.

It is an amenable number.

55707864 is an abundant number, since it is smaller than the sum of its proper divisors (84572136).

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

55707864 is a wasteful number, since it uses less digits than its factorization.

55707864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16847 (or 16843 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 55707864 is about 7463.7700929222. The cubic root of 55707864 is about 381.9197953011.

The spelling of 55707864 in words is "fifty-five million, seven hundred seven thousand, eight hundred sixty-four".