257532503 has 4 divisors (see below), whose sum is σ = 257723088. Its totient is φ = 257341920.

The previous prime is 257532487. The next prime is 257532529. The reversal of 257532503 is 305235752.

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 257532503 - 2⁴ = 257532487 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 257532503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257532533) 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, 93251 + ... + 95972.

It is an arithmetic number, because the mean of its divisors is an integer number (64430772).

Almost surely, 2^257532503 is an apocalyptic number.

257532503 is a deficient number, since it is larger than the sum of its proper divisors (190585).

257532503 is a wasteful number, since it uses less digits than its factorization.

257532503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190584.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 257532503 is about 16047.8192599493. The cubic root of 257532503 is about 636.2249304944.

The spelling of 257532503 in words is "two hundred fifty-seven million, five hundred thirty-two thousand, five hundred three".