251242272 has 36 divisors (see below), whose sum is σ = 714471030. Its totient is φ = 83747328.

The previous prime is 251242267. The next prime is 251242289. The reversal of 251242272 is 272242152.

It can be written as a sum of positive squares in only one way, i.e., 204947856 + 46294416 = 14316^2 + 6804^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 435897 + ... + 436472.

Almost surely, 2^251242272 is an apocalyptic number.

It is an amenable number.

251242272 is an abundant number, since it is smaller than the sum of its proper divisors (463228758).

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

251242272 is a wasteful number, since it uses less digits than its factorization.

251242272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872385 (or 872374 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 251242272 is about 15850.6237101257. The cubic root of 251242272 is about 631.0022444777.

The spelling of 251242272 in words is "two hundred fifty-one million, two hundred forty-two thousand, two hundred seventy-two".