251151132 has 48 divisors (see below), whose sum is σ = 634943232. Its totient is φ = 76957440.

The previous prime is 251151113. The next prime is 251151137. The reversal of 251151132 is 231151152.

251151132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×251151132² = 126153782209762848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251151099 and 251151108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251151137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5544 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (13227984).

Almost surely, 2^251151132 is an apocalyptic number.

It is an amenable number.

251151132 is an abundant number, since it is smaller than the sum of its proper divisors (383792100).

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

251151132 is a wasteful number, since it uses less digits than its factorization.

251151132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28698 (or 28696 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 251151132 is about 15847.7484836175. The cubic root of 251151132 is about 630.9259349996.

The spelling of 251151132 in words is "two hundred fifty-one million, one hundred fifty-one thousand, one hundred thirty-two".