57099979 has 2 divisors, whose sum is σ = 57099980. Its totient is φ = 57099978.

The previous prime is 57099953. The next prime is 57099983. The reversal of 57099979 is 97999075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57099979 - 2⁹ = 57099467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57099919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28549989 + 28549990.

It is an arithmetic number, because the mean of its divisors is an integer number (28549990).

Almost surely, 2^57099979 is an apocalyptic number.

57099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

57099979 is an equidigital number, since it uses as much as digits as its factorization.

57099979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 57099979 is about 7556.4528053843. The cubic root of 57099979 is about 385.0749929812.

The spelling of 57099979 in words is "fifty-seven million, ninety-nine thousand, nine hundred seventy-nine".