57278316 has 24 divisors (see below), whose sum is σ = 133794864. Its totient is φ = 19072000.

The previous prime is 57278281. The next prime is 57278323. The reversal of 57278316 is 61387275.

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, 12316 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (5574786).

Almost surely, 2^57278316 is an apocalyptic number.

It is an amenable number.

57278316 is an abundant number, since it is smaller than the sum of its proper divisors (76516548).

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

57278316 is a wasteful number, since it uses less digits than its factorization.

57278316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201 (or 5199 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 57278316 is about 7568.2439178451. The cubic root of 57278316 is about 385.4754703531.

The spelling of 57278316 in words is "fifty-seven million, two hundred seventy-eight thousand, three hundred sixteen".