57951816 has 64 divisors (see below), whose sum is σ = 157852800. Its totient is φ = 17622528.

The previous prime is 57951809. The next prime is 57951821. The reversal of 57951816 is 61815975.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26725 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (2466450).

Almost surely, 2^57951816 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 57951816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78926400).

57951816 is an abundant number, since it is smaller than the sum of its proper divisors (99900984).

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

57951816 is a wasteful number, since it uses less digits than its factorization.

57951816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198 (or 2194 counting only the distinct ones).

The product of its digits is 75600, while the sum is 42.

The square root of 57951816 is about 7612.6090139978. The cubic root of 57951816 is about 386.9804422275.

The spelling of 57951816 in words is "fifty-seven million, nine hundred fifty-one thousand, eight hundred sixteen".