57106212 has 24 divisors (see below), whose sum is σ = 133370496. Its totient is φ = 19017888.

The previous prime is 57106211. The next prime is 57106219. The reversal of 57106212 is 21260175.

It is a super-2 number, since 2×57106212² = 6522238897977888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57106211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22773 + ... + 25155.

It is an arithmetic number, because the mean of its divisors is an integer number (5557104).

Almost surely, 2^57106212 is an apocalyptic number.

It is an amenable number.

57106212 is an abundant number, since it is smaller than the sum of its proper divisors (76264284).

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

57106212 is a wasteful number, since it uses less digits than its factorization.

57106212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 57106212 is about 7556.8652230935. The cubic root of 57106212 is about 385.0890039910.

Adding to 57106212 its reverse (21260175), we get a palindrome (78366387).

The spelling of 57106212 in words is "fifty-seven million, one hundred six thousand, two hundred twelve".