57278355 has 48 divisors (see below), whose sum is σ = 99232224. Its totient is φ = 28200960.

The previous prime is 57278339. The next prime is 57278399. The reversal of 57278355 is 55387275.

It is not a de Polignac number, because 57278355 - 2⁴ = 57278339 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316365 + ... + 316545.

It is an arithmetic number, because the mean of its divisors is an integer number (2067338).

Almost surely, 2^57278355 is an apocalyptic number.

57278355 is a deficient number, since it is larger than the sum of its proper divisors (41953869).

57278355 is a wasteful number, since it uses less digits than its factorization.

57278355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 279 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The square root of 57278355 is about 7568.2464944001. The cubic root of 57278355 is about 385.4755578414.

The spelling of 57278355 in words is "fifty-seven million, two hundred seventy-eight thousand, three hundred fifty-five".