57211116 has 24 divisors (see below), whose sum is σ = 133615104. Its totient is φ = 19052880.

The previous prime is 57211093. The next prime is 57211123. The reversal of 57211116 is 61111275.

It is a super-2 number, since 2×57211116² = 6546223587930912, which contains 22 as substring.

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, 23601 + ... + 25911.

It is an arithmetic number, because the mean of its divisors is an integer number (5567296).

Almost surely, 2^57211116 is an apocalyptic number.

It is an amenable number.

57211116 is an abundant number, since it is smaller than the sum of its proper divisors (76403988).

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

57211116 is a wasteful number, since it uses less digits than its factorization.

57211116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4379 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 57211116 is about 7563.8030117131. The cubic root of 57211116 is about 385.3246623315.

The spelling of 57211116 in words is "fifty-seven million, two hundred eleven thousand, one hundred sixteen".