57979121 has 2 divisors, whose sum is σ = 57979122. Its totient is φ = 57979120.

The previous prime is 57979109. The next prime is 57979193. The reversal of 57979121 is 12197975.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 20830096 = 6095^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 57979121 - 2¹⁰ = 57978097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57979921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28989560 + 28989561.

It is an arithmetic number, because the mean of its divisors is an integer number (28989561).

Almost surely, 2^57979121 is an apocalyptic number.

It is an amenable number.

57979121 is a deficient number, since it is larger than the sum of its proper divisors (1).

57979121 is an equidigital number, since it uses as much as digits as its factorization.

57979121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 41.

The square root of 57979121 is about 7614.4022089722. The cubic root of 57979121 is about 387.0412101931.

The spelling of 57979121 in words is "fifty-seven million, nine hundred seventy-nine thousand, one hundred twenty-one".