251552130 has 16 divisors (see below), whose sum is σ = 603725184. Its totient is φ = 67080560.

The previous prime is 251552129. The next prime is 251552141. The reversal of 251552130 is 31255152.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 251552130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4192506 + ... + 4192565.

It is an arithmetic number, because the mean of its divisors is an integer number (37732824).

Almost surely, 2^251552130 is an apocalyptic number.

251552130 is an abundant number, since it is smaller than the sum of its proper divisors (352173054).

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

251552130 is a wasteful number, since it uses less digits than its factorization.

251552130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8385081.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 251552130 is about 15860.3950139963. The cubic root of 251552130 is about 631.2615436898.

It can be divided in two parts, 2515 and 52130, that added together give a palindrome (54645).

The spelling of 251552130 in words is "two hundred fifty-one million, five hundred fifty-two thousand, one hundred thirty".