251452252 has 24 divisors (see below), whose sum is σ = 445792256. Its totient is φ = 124091568.

The previous prime is 251452249. The next prime is 251452283. The reversal of 251452252 is 252254152.

It is a self number, because there is not a number n which added to its sum of digits gives 251452252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150373 + ... + 152035.

Almost surely, 2^251452252 is an apocalyptic number.

It is an amenable number.

251452252 is a deficient number, since it is larger than the sum of its proper divisors (194340004).

251452252 is a wasteful number, since it uses less digits than its factorization.

251452252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2135 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 251452252 is about 15857.2460408483. The cubic root of 251452252 is about 631.1779858115.

The spelling of 251452252 in words is "two hundred fifty-one million, four hundred fifty-two thousand, two hundred fifty-two".