2551431532 has 18 divisors (see below), whose sum is σ = 4834888548. Its totient is φ = 1177583472.

The previous prime is 2551431523. The next prime is 2551431539. The reversal of 2551431532 is 2351341552.

It is a junction number, because it is equal to n+sod(n) for n = 2551431494 and 2551431503.

It is not an unprimeable number, because it can be changed into a prime (2551431539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1886478 + ... + 1887829.

Almost surely, 2^2551431532 is an apocalyptic number.

It is an amenable number.

2551431532 is a deficient number, since it is larger than the sum of its proper divisors (2283457016).

2551431532 is a wasteful number, since it uses less digits than its factorization.

2551431532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774337 (or 3774322 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 2551431532 is about 50511.6969819863. The cubic root of 2551431532 is about 1366.4528144732.

The spelling of 2551431532 in words is "two billion, five hundred fifty-one million, four hundred thirty-one thousand, five hundred thirty-two".