5251231332 has 18 divisors (see below), whose sum is σ = 13273945958. Its totient is φ = 1750410432.

The previous prime is 5251231291. The next prime is 5251231367. The reversal of 5251231332 is 2331321525.

It is a happy number.

5251231332 is a `hidden beast` number, since 52 + 51 + 231 + 332 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3972024576 + 1279206756 = 63024^2 + 35766^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 5251231296 and 5251231305.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72933733 + ... + 72933804.

Almost surely, 2^5251231332 is an apocalyptic number.

It is an amenable number.

5251231332 is an abundant number, since it is smaller than the sum of its proper divisors (8022714626).

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

5251231332 is a wasteful number, since it uses less digits than its factorization.

5251231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145867547 (or 145867542 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 5251231332 is about 72465.3802308385. The cubic root of 5251231332 is about 1738.1491893722.

Adding to 5251231332 its reverse (2331321525), we get a palindrome (7582552857).

The spelling of 5251231332 in words is "five billion, two hundred fifty-one million, two hundred thirty-one thousand, three hundred thirty-two".