251230 has 32 divisors (see below), whose sum is σ = 536256. Its totient is φ = 82944.

The previous prime is 251221. The next prime is 251231. The reversal of 251230 is 32152.

It is a self number, because there is not a number n which added to its sum of digits gives 251230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2²⁵¹²³⁰ is an apocalyptic number.

251230 is an abundant number, since it is smaller than the sum of its proper divisors (285026).

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

251230 is a wasteful number, since it uses less digits than its factorization.

251230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 251230 is about 501.2284908103. The cubic root of 251230 is about 63.0991970483.

Adding to 251230 its reverse (32152), we get a palindrome (283382).

The spelling of 251230 in words is "two hundred fifty-one thousand, two hundred thirty".