57056212 has 12 divisors (see below), whose sum is σ = 99954036. Its totient is φ = 28497920.

The previous prime is 57056191. The next prime is 57056243. The reversal of 57056212 is 21265075.

It can be written as a sum of positive squares in 2 ways, for example, as 17943696 + 39112516 = 4236^2 + 6254^2 .

It is a super-2 number, since 2×57056212² = 6510822655577888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2989 + ... + 11092.

It is an arithmetic number, because the mean of its divisors is an integer number (8329503).

Almost surely, 2^57056212 is an apocalyptic number.

It is an amenable number.

57056212 is a deficient number, since it is larger than the sum of its proper divisors (42897824).

57056212 is a wasteful number, since it uses less digits than its factorization.

57056212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15098 (or 15096 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 57056212 is about 7553.5562485494. The cubic root of 57056212 is about 384.9765814732.

The spelling of 57056212 in words is "fifty-seven million, fifty-six thousand, two hundred twelve".