257472563 has 4 divisors (see below), whose sum is σ = 257647200. Its totient is φ = 257297928.

The previous prime is 257472547. The next prime is 257472581. The reversal of 257472563 is 365274752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257472563 - 2⁴ = 257472547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257472563.

It is not an unprimeable number, because it can be changed into a prime (257472503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85088 + ... + 88061.

It is an arithmetic number, because the mean of its divisors is an integer number (64411800).

Almost surely, 2^257472563 is an apocalyptic number.

257472563 is a deficient number, since it is larger than the sum of its proper divisors (174637).

257472563 is a wasteful number, since it uses less digits than its factorization.

257472563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174636.

The product of its digits is 352800, while the sum is 41.

The square root of 257472563 is about 16045.9516078044. The cubic root of 257472563 is about 636.1755667819.

The spelling of 257472563 in words is "two hundred fifty-seven million, four hundred seventy-two thousand, five hundred sixty-three".