251040760 has 16 divisors (see below), whose sum is σ = 564841800. Its totient is φ = 100416288.

The previous prime is 251040739. The next prime is 251040781. The reversal of 251040760 is 67040152.

It is an interprime number because it is at equal distance from previous prime (251040739) and next prime (251040781).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3137970 + ... + 3138049.

Almost surely, 2^251040760 is an apocalyptic number.

251040760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251040760 is an abundant number, since it is smaller than the sum of its proper divisors (313801040).

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

251040760 is a wasteful number, since it uses less digits than its factorization.

251040760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276030 (or 6276026 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 251040760 is about 15844.2658397289. The cubic root of 251040760 is about 630.8334982794.

The spelling of 251040760 in words is "two hundred fifty-one million, forty thousand, seven hundred sixty".