251442452 has 12 divisors (see below), whose sum is σ = 441964320. Its totient is φ = 125166936.

The previous prime is 251442449. The next prime is 251442479. The reversal of 251442452 is 254244152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137552 + ... + 139367.

It is an arithmetic number, because the mean of its divisors is an integer number (36830360).

Almost surely, 2^251442452 is an apocalyptic number.

It is an amenable number.

251442452 is a deficient number, since it is larger than the sum of its proper divisors (190521868).

251442452 is a wasteful number, since it uses less digits than its factorization.

251442452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277150 (or 277148 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 251442452 is about 15856.9370308392. The cubic root of 251442452 is about 631.1697859451.

The spelling of 251442452 in words is "two hundred fifty-one million, four hundred forty-two thousand, four hundred fifty-two".