457031257 has 2 divisors, whose sum is σ = 457031258. Its totient is φ = 457031256.

The previous prime is 457031249. The next prime is 457031279. The reversal of 457031257 is 752130754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347598736 + 109432521 = 18644^2 + 10461^2 .

It is a cyclic number.

It is not a de Polignac number, because 457031257 - 2³ = 457031249 is a prime.

It is not a weakly prime, because it can be changed into another prime (457031297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228515628 + 228515629.

It is an arithmetic number, because the mean of its divisors is an integer number (228515629).

Almost surely, 2^457031257 is an apocalyptic number.

It is an amenable number.

457031257 is a deficient number, since it is larger than the sum of its proper divisors (1).

457031257 is an equidigital number, since it uses as much as digits as its factorization.

457031257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 457031257 is about 21378.2893843263. The cubic root of 457031257 is about 770.2800224012.

The spelling of 457031257 in words is "four hundred fifty-seven million, thirty-one thousand, two hundred fifty-seven".