252551403 has 18 divisors (see below), whose sum is σ = 395018676. Its totient is φ = 155415312.

The previous prime is 252551359. The next prime is 252551419. The reversal of 252551403 is 304155252.

It is a happy number.

252551403 is a `hidden beast` number, since 2 + 5 + 255 + 1 + 403 = 666.

It is not a de Polignac number, because 252551403 - 2¹⁸ = 252289259 is a prime.

It is a super-2 number, since 2×252551403² = 127564422314536818, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (252551423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81501 + ... + 84542.

It is an arithmetic number, because the mean of its divisors is an integer number (21945482).

Almost surely, 2^252551403 is an apocalyptic number.

252551403 is a deficient number, since it is larger than the sum of its proper divisors (142467273).

252551403 is a wasteful number, since it uses less digits than its factorization.

252551403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166075 (or 166059 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 252551403 is about 15891.8659382717. The cubic root of 252551403 is about 632.0963198747.

The spelling of 252551403 in words is "two hundred fifty-two million, five hundred fifty-one thousand, four hundred three".