57121066 has 8 divisors (see below), whose sum is σ = 86155524. Its totient is φ = 28402560.

The previous prime is 57121021. The next prime is 57121079. The reversal of 57121066 is 66012175.

It can be written as a sum of positive squares in 2 ways, for example, as 50765625 + 6355441 = 7125^2 + 2521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 78535 + ... + 79258.

Almost surely, 2^57121066 is an apocalyptic number.

57121066 is a deficient number, since it is larger than the sum of its proper divisors (29034458).

57121066 is a wasteful number, since it uses less digits than its factorization.

57121066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157976.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 57121066 is about 7557.8479741260. The cubic root of 57121066 is about 385.1223898288.

The spelling of 57121066 in words is "fifty-seven million, one hundred twenty-one thousand, sixty-six".