57121079 has 2 divisors, whose sum is σ = 57121080. Its totient is φ = 57121078.

The previous prime is 57121021. The next prime is 57121091. The reversal of 57121079 is 97012175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57121079 - 2²⁰ = 56072503 is a prime.

It is a super-2 number, since 2×57121079² = 6525635332248482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28560539 + 28560540.

It is an arithmetic number, because the mean of its divisors is an integer number (28560540).

Almost surely, 2^57121079 is an apocalyptic number.

57121079 is a deficient number, since it is larger than the sum of its proper divisors (1).

57121079 is an equidigital number, since it uses as much as digits as its factorization.

57121079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 57121079 is about 7557.8488341591. The cubic root of 57121079 is about 385.1224190450.

The spelling of 57121079 in words is "fifty-seven million, one hundred twenty-one thousand, seventy-nine".