257473455 has 16 divisors (see below), whose sum is σ = 426163680. Its totient is φ = 132583808.

The previous prime is 257473451. The next prime is 257473459. The reversal of 257473455 is 554374752.

It is an interprime number because it is at equal distance from previous prime (257473451) and next prime (257473459).

It is a cyclic number.

It is not a de Polignac number, because 257473455 - 2² = 257473451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257473451) 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 in 15 ways as a sum of consecutive naturals, for example, 295512 + ... + 296381.

It is an arithmetic number, because the mean of its divisors is an integer number (26635230).

Almost surely, 2^257473455 is an apocalyptic number.

257473455 is a deficient number, since it is larger than the sum of its proper divisors (168690225).

257473455 is a wasteful number, since it uses less digits than its factorization.

257473455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591930.

The product of its digits is 588000, while the sum is 42.

The square root of 257473455 is about 16045.9794029533. The cubic root of 257473455 is about 636.1763014465.

The spelling of 257473455 in words is "two hundred fifty-seven million, four hundred seventy-three thousand, four hundred fifty-five".