55957880 has 64 divisors (see below), whose sum is σ = 145450080. Its totient is φ = 19148800.

The previous prime is 55957861. The next prime is 55957903. The reversal of 55957880 is 8875955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3740 + ... + 11220.

Almost surely, 2^55957880 is an apocalyptic number.

It is a pronic number, being equal to 7480×7481.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55957880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72725040).

55957880 is an abundant number, since it is smaller than the sum of its proper divisors (89492200).

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

55957880 is a wasteful number, since it uses less digits than its factorization.

55957880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520 (or 7516 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 47.

The square root of 55957880 is about 7480.4999832899. The cubic root of 55957880 is about 382.4902926609.

The spelling of 55957880 in words is "fifty-five million, nine hundred fifty-seven thousand, eight hundred eighty".