251532232 has 64 divisors (see below), whose sum is σ = 566092800. Its totient is φ = 102442560.

The previous prime is 251532199. The next prime is 251532257. The reversal of 251532232 is 232235152.

It is a junction number, because it is equal to n+sod(n) for n = 251532197 and 251532206.

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, 230007 + ... + 231097.

It is an arithmetic number, because the mean of its divisors is an integer number (8845200).

Almost surely, 2^251532232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251532232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283046400).

251532232 is an abundant number, since it is smaller than the sum of its proper divisors (314560568).

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

251532232 is a wasteful number, since it uses less digits than its factorization.

251532232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1302 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 251532232 is about 15859.7677158274. The cubic root of 251532232 is about 631.2448987988.

Adding to 251532232 its reverse (232235152), we get a palindrome (483767384).

The spelling of 251532232 in words is "two hundred fifty-one million, five hundred thirty-two thousand, two hundred thirty-two".