5251551231 has 8 divisors (see below), whose sum is σ = 7002826240. Its totient is φ = 3500655192.

The previous prime is 5251551203. The next prime is 5251551233. The reversal of 5251551231 is 1321551525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5251551231 - 2²¹ = 5249454079 is a prime.

It is a super-2 number, since 2×5251551231² = 55157580663635230722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251551233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60655 + ... + 119088.

It is an arithmetic number, because the mean of its divisors is an integer number (875353280).

Almost surely, 2^5251551231 is an apocalyptic number.

5251551231 is a deficient number, since it is larger than the sum of its proper divisors (1751275009).

5251551231 is a wasteful number, since it uses less digits than its factorization.

5251551231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189485.

The product of its digits is 7500, while the sum is 30.

The square root of 5251551231 is about 72467.5874512185. The cubic root of 5251551231 is about 1738.1844840083.

The spelling of 5251551231 in words is "five billion, two hundred fifty-one million, five hundred fifty-one thousand, two hundred thirty-one".