257670451 has 2 divisors, whose sum is σ = 257670452. Its totient is φ = 257670450.

The previous prime is 257670443. The next prime is 257670463. The reversal of 257670451 is 154076752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257670451 - 2³ = 257670443 is a prime.

It is a super-2 number, since 2×257670451² = 132788122637086802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257670451.

It is not a weakly prime, because it can be changed into another prime (257670421) 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, 128835225 + 128835226.

It is an arithmetic number, because the mean of its divisors is an integer number (128835226).

Almost surely, 2^257670451 is an apocalyptic number.

257670451 is a deficient number, since it is larger than the sum of its proper divisors (1).

257670451 is an equidigital number, since it uses as much as digits as its factorization.

257670451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 257670451 is about 16052.1167140038. The cubic root of 257670451 is about 636.3385087673.

It can be divided in two parts, 257670 and 451, that added together give a triangular number (258121 = T₇₁₈).

The spelling of 257670451 in words is "two hundred fifty-seven million, six hundred seventy thousand, four hundred fifty-one".