57155604 has 48 divisors (see below), whose sum is σ = 146313216. Its totient is φ = 17221600.

The previous prime is 57155587. The next prime is 57155611. The reversal of 57155604 is 40655175.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 24079 + ... + 26345.

It is an arithmetic number, because the mean of its divisors is an integer number (3048192).

Almost surely, 2^57155604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57155604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73156608).

57155604 is an abundant number, since it is smaller than the sum of its proper divisors (89157612).

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

57155604 is a wasteful number, since it uses less digits than its factorization.

57155604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 57155604 is about 7560.1325385207. The cubic root of 57155604 is about 385.1999950397.

The spelling of 57155604 in words is "fifty-seven million, one hundred fifty-five thousand, six hundred four".