251376216 has 64 divisors (see below), whose sum is σ = 773472000. Its totient is φ = 66296448.

The previous prime is 251376211. The next prime is 251376221. The reversal of 251376216 is 612673152.

It is an interprime number because it is at equal distance from previous prime (251376211) and next prime (251376221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251376211) 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 15 ways as a sum of consecutive naturals, for example, 55366 + ... + 59733.

It is an arithmetic number, because the mean of its divisors is an integer number (12085500).

Almost surely, 2^251376216 is an apocalyptic number.

251376216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

251376216 is an abundant number, since it is smaller than the sum of its proper divisors (522095784).

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

251376216 is a wasteful number, since it uses less digits than its factorization.

251376216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115128 (or 115124 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 251376216 is about 15854.8483436455. The cubic root of 251376216 is about 631.1143593017.

The spelling of 251376216 in words is "two hundred fifty-one million, three hundred seventy-six thousand, two hundred sixteen".