252587403 has 20 divisors (see below), whose sum is σ = 393730128. Its totient is φ = 161069040.

The previous prime is 252587393. The next prime is 252587443. The reversal of 252587403 is 304785252.

It is not a de Polignac number, because 252587403 - 2⁵ = 252587371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252587443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65928 + ... + 69653.

Almost surely, 2^252587403 is an apocalyptic number.

252587403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

252587403 is a deficient number, since it is larger than the sum of its proper divisors (141142725).

252587403 is a wasteful number, since it uses less digits than its factorization.

252587403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135616 (or 135607 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 252587403 is about 15892.9985528219. The cubic root of 252587403 is about 632.1263525547.

The spelling of 252587403 in words is "two hundred fifty-two million, five hundred eighty-seven thousand, four hundred three".