251135060 has 24 divisors (see below), whose sum is σ = 575328096. Its totient is φ = 91321760.

The previous prime is 251135057. The next prime is 251135063. The reversal of 251135060 is 60531152.

It is an interprime number because it is at equal distance from previous prime (251135057) and next prime (251135063).

It is a super-2 number, since 2×251135060² = 126137636722407200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251135063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570542 + ... + 570981.

It is an arithmetic number, because the mean of its divisors is an integer number (23972004).

Almost surely, 2^251135060 is an apocalyptic number.

251135060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251135060 is an abundant number, since it is smaller than the sum of its proper divisors (324193036).

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

251135060 is a wasteful number, since it uses less digits than its factorization.

251135060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141543 (or 1141541 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 251135060 is about 15847.2414003195. The cubic root of 251135060 is about 630.9124763597.

The spelling of 251135060 in words is "two hundred fifty-one million, one hundred thirty-five thousand, sixty".