57242473 has 2 divisors, whose sum is σ = 57242474. Its totient is φ = 57242472.

The previous prime is 57242447. The next prime is 57242477. The reversal of 57242473 is 37424275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42863209 + 14379264 = 6547^2 + 3792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57242473 is a prime.

It is not a weakly prime, because it can be changed into another prime (57242477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28621236 + 28621237.

It is an arithmetic number, because the mean of its divisors is an integer number (28621237).

Almost surely, 2^57242473 is an apocalyptic number.

It is an amenable number.

57242473 is a deficient number, since it is larger than the sum of its proper divisors (1).

57242473 is an equidigital number, since it uses as much as digits as its factorization.

57242473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 34.

The square root of 57242473 is about 7565.8755607002. The cubic root of 57242473 is about 385.3950473633.

The spelling of 57242473 in words is "fifty-seven million, two hundred forty-two thousand, four hundred seventy-three".