251113772 has 24 divisors (see below), whose sum is σ = 540861216. Its totient is φ = 99341568.

The previous prime is 251113757. The next prime is 251113777. The reversal of 251113772 is 277311152.

It is not an unprimeable number, because it can be changed into a prime (251113777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344573 + ... + 345300.

It is an arithmetic number, because the mean of its divisors is an integer number (22535884).

Almost surely, 2^251113772 is an apocalyptic number.

It is an amenable number.

251113772 is an abundant number, since it is smaller than the sum of its proper divisors (289747444).

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

251113772 is a wasteful number, since it uses less digits than its factorization.

251113772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689897 (or 689895 counting only the distinct ones).

The product of its digits is 2940, while the sum is 29.

The square root of 251113772 is about 15846.5697234449. The cubic root of 251113772 is about 630.8946489746.

The spelling of 251113772 in words is "two hundred fifty-one million, one hundred thirteen thousand, seven hundred seventy-two".