251495230 has 32 divisors (see below), whose sum is σ = 529986240. Its totient is φ = 84122880.

The previous prime is 251495207. The next prime is 251495243. The reversal of 251495230 is 32594152.

It is a junction number, because it is equal to n+sod(n) for n = 251495192 and 251495201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40945 + ... + 46684.

It is an arithmetic number, because the mean of its divisors is an integer number (16562070).

Almost surely, 2^251495230 is an apocalyptic number.

251495230 is an abundant number, since it is smaller than the sum of its proper divisors (278491010).

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

251495230 is a wasteful number, since it uses less digits than its factorization.

251495230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87684.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 251495230 is about 15858.6011362919. The cubic root of 251495230 is about 631.2139438936.

The spelling of 251495230 in words is "two hundred fifty-one million, four hundred ninety-five thousand, two hundred thirty".