57273986 has 64 divisors (see below), whose sum is σ = 114960384. Its totient is φ = 20716800.

The previous prime is 57273971. The next prime is 57273989. The reversal of 57273986 is 68937275.

57273986 = 81² + 82² + ... + 556².

It is a self number, because there is not a number n which added to its sum of digits gives 57273986.

It is not an unprimeable number, because it can be changed into a prime (57273989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342875 + ... + 343041.

It is an arithmetic number, because the mean of its divisors is an integer number (1796256).

Almost surely, 2^57273986 is an apocalyptic number.

57273986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

57273986 is a wasteful number, since it uses less digits than its factorization.

57273986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 635040, while the sum is 47.

The square root of 57273986 is about 7567.9578487198. The cubic root of 57273986 is about 385.4657566665.

The spelling of 57273986 in words is "fifty-seven million, two hundred seventy-three thousand, nine hundred eighty-six".