257472451 has 2 divisors, whose sum is σ = 257472452. Its totient is φ = 257472450.

The previous prime is 257472443. The next prime is 257472473. The reversal of 257472451 is 154274752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257472451 - 2³ = 257472443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257472451.

It is not a weakly prime, because it can be changed into another prime (257472851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128736225 + 128736226.

It is an arithmetic number, because the mean of its divisors is an integer number (128736226).

Almost surely, 2^257472451 is an apocalyptic number.

257472451 is a deficient number, since it is larger than the sum of its proper divisors (1).

257472451 is an equidigital number, since it uses as much as digits as its factorization.

257472451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 37.

The square root of 257472451 is about 16045.9481178271. The cubic root of 257472451 is about 636.1754745368.

The spelling of 257472451 in words is "two hundred fifty-seven million, four hundred seventy-two thousand, four hundred fifty-one".