257056453 has 16 divisors (see below), whose sum is σ = 274982400. Its totient is φ = 239606640.

The previous prime is 257056399. The next prime is 257056477. The reversal of 257056453 is 354650752.

It is a cyclic number.

It is not a de Polignac number, because 257056453 - 2²⁵ = 223502021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257056753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345600 + ... + 346342.

It is an arithmetic number, because the mean of its divisors is an integer number (17186400).

Almost surely, 2^257056453 is an apocalyptic number.

It is an amenable number.

257056453 is a deficient number, since it is larger than the sum of its proper divisors (17925947).

257056453 is a wasteful number, since it uses less digits than its factorization.

257056453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 257056453 is about 16032.9801658955. The cubic root of 257056453 is about 635.8326671381.

The spelling of 257056453 in words is "two hundred fifty-seven million, fifty-six thousand, four hundred fifty-three".