251054401 has 12 divisors (see below), whose sum is σ = 277644672. Its totient is φ = 226804656.

The previous prime is 251054389. The next prime is 251054417. The reversal of 251054401 is 104450152.

It is a de Polignac number, because none of the positive numbers 2^k-251054401 is a prime.

It is a super-2 number, since 2×251054401² = 126056624522937602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251054491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7861 + ... + 23746.

It is an arithmetic number, because the mean of its divisors is an integer number (23137056).

Almost surely, 2^251054401 is an apocalyptic number.

It is an amenable number.

251054401 is a deficient number, since it is larger than the sum of its proper divisors (26590271).

251054401 is a wasteful number, since it uses less digits than its factorization.

251054401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31680 (or 31667 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 251054401 is about 15844.6963050732. The cubic root of 251054401 is about 630.8449241051.

The spelling of 251054401 in words is "two hundred fifty-one million, fifty-four thousand, four hundred one".