57121005 has 16 divisors (see below), whose sum is σ = 91535040. Its totient is φ = 30417408.

The previous prime is 57120989. The next prime is 57121021. The reversal of 57121005 is 50012175.

It is an interprime number because it is at equal distance from previous prime (57120989) and next prime (57121021).

It is not a de Polignac number, because 57121005 - 2⁴ = 57120989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8509 + ... + 13661.

It is an arithmetic number, because the mean of its divisors is an integer number (5720940).

Almost surely, 2^57121005 is an apocalyptic number.

It is an amenable number.

57121005 is a deficient number, since it is larger than the sum of its proper divisors (34414035).

57121005 is a wasteful number, since it uses less digits than its factorization.

57121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 57121005 is about 7557.8439385846. The cubic root of 57121005 is about 385.1222527371.

The spelling of 57121005 in words is "fifty-seven million, one hundred twenty-one thousand, five".