251104056 has 64 divisors (see below), whose sum is σ = 722668800. Its totient is φ = 71221248.

The previous prime is 251104043. The next prime is 251104081. The reversal of 251104056 is 650401152.

It is a super-2 number, since 2×251104056² = 126106493879302272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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, 17976 + ... + 28728.

It is an arithmetic number, because the mean of its divisors is an integer number (11291700).

Almost surely, 2^251104056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251104056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361334400).

251104056 is an abundant number, since it is smaller than the sum of its proper divisors (471564744).

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

251104056 is a wasteful number, since it uses less digits than its factorization.

251104056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908 (or 10904 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 251104056 is about 15846.2631557096. The cubic root of 251104056 is about 630.8865120898.

The spelling of 251104056 in words is "two hundred fifty-one million, one hundred four thousand, fifty-six".