57157788 has 12 divisors (see below), whose sum is σ = 133368200. Its totient is φ = 19052592.

The previous prime is 57157787. The next prime is 57157817. The reversal of 57157788 is 88775175.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381563 + ... + 2381586.

Almost surely, 2^57157788 is an apocalyptic number.

It is an amenable number.

57157788 is an abundant number, since it is smaller than the sum of its proper divisors (76210412).

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

57157788 is a wasteful number, since it uses less digits than its factorization.

57157788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763156 (or 4763154 counting only the distinct ones).

The product of its digits is 548800, while the sum is 48.

The square root of 57157788 is about 7560.2769790531. The cubic root of 57157788 is about 385.2049013307.

The spelling of 57157788 in words is "fifty-seven million, one hundred fifty-seven thousand, seven hundred eighty-eight".