251462442 has 48 divisors (see below), whose sum is σ = 631786176. Its totient is φ = 65313600.

The previous prime is 251462417. The next prime is 251462447. The reversal of 251462442 is 244264152.

It is not an unprimeable number, because it can be changed into a prime (251462447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19659 + ... + 29822.

It is an arithmetic number, because the mean of its divisors is an integer number (13162212).

Almost surely, 2^251462442 is an apocalyptic number.

251462442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

251462442 is an abundant number, since it is smaller than the sum of its proper divisors (380323734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251462442 is a wasteful number, since it uses less digits than its factorization.

251462442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49515 (or 49504 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 251462442 is about 15857.5673418088. The cubic root of 251462442 is about 631.1865117732.

The spelling of 251462442 in words is "two hundred fifty-one million, four hundred sixty-two thousand, four hundred forty-two".