57612212 has 24 divisors (see below), whose sum is σ = 119199360. Its totient is φ = 23839200.

The previous prime is 57612197. The next prime is 57612221. The reversal of 57612212 is 21221675.

It is a congruent number.

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, 34664 + ... + 36287.

It is an arithmetic number, because the mean of its divisors is an integer number (4966640).

Almost surely, 2^57612212 is an apocalyptic number.

It is an amenable number.

57612212 is an abundant number, since it is smaller than the sum of its proper divisors (61587148).

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

57612212 is a wasteful number, since it uses less digits than its factorization.

57612212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70991 (or 70989 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 57612212 is about 7590.2708779068. The cubic root of 57612212 is about 386.2230448682.

Adding to 57612212 its reverse (21221675), we get a palindrome (78833887).

The spelling of 57612212 in words is "fifty-seven million, six hundred twelve thousand, two hundred twelve".