251130 has 32 divisors (see below), whose sum is σ = 658368. Its totient is φ = 60800.

The previous prime is 251117. The next prime is 251143. The reversal of 251130 is 31152.

It is an interprime number because it is at equal distance from previous prime (251117) and next prime (251143).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 710.

It is an arithmetic number, because the mean of its divisors is an integer number (20574).

2²⁵¹¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329184).

251130 is an abundant number, since it is smaller than the sum of its proper divisors (407238).

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

251130 is a wasteful number, since it uses less digits than its factorization.

251130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 251130 is about 501.1287259777. The cubic root of 251130 is about 63.0908239014.

Adding to 251130 its reverse (31152), we get a palindrome (282282).

The spelling of 251130 in words is "two hundred fifty-one thousand, one hundred thirty".