57198457 has 2 divisors, whose sum is σ = 57198458. Its totient is φ = 57198456.

The previous prime is 57198451. The next prime is 57198461. The reversal of 57198457 is 75489175.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56866681 + 331776 = 7541^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 57198457 - 2⁷ = 57198329 is a prime.

It is not a weakly prime, because it can be changed into another prime (57198451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28599228 + 28599229.

It is an arithmetic number, because the mean of its divisors is an integer number (28599229).

Almost surely, 2^57198457 is an apocalyptic number.

It is an amenable number.

57198457 is a deficient number, since it is larger than the sum of its proper divisors (1).

57198457 is an equidigital number, since it uses as much as digits as its factorization.

57198457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 46.

The square root of 57198457 is about 7562.9661509225. The cubic root of 57198457 is about 385.2962402051.

The spelling of 57198457 in words is "fifty-seven million, one hundred ninety-eight thousand, four hundred fifty-seven".