2551251531 has 8 divisors (see below), whose sum is σ = 3403944000. Its totient is φ = 1699696712.

The previous prime is 2551251529. The next prime is 2551251541. The reversal of 2551251531 is 1351521552.

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

It is a cyclic number.

It is not a de Polignac number, because 2551251531 - 2¹ = 2551251529 is a prime.

It is a super-2 number, since 2×2551251531² = 13017768748859687922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2551251541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279165 + ... + 288158.

It is an arithmetic number, because the mean of its divisors is an integer number (425493000).

Almost surely, 2^2551251531 is an apocalyptic number.

2551251531 is a deficient number, since it is larger than the sum of its proper divisors (852692469).

2551251531 is a wasteful number, since it uses less digits than its factorization.

2551251531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568825.

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

The square root of 2551251531 is about 50509.9151751416. The cubic root of 2551251531 is about 1366.4206797475.

The spelling of 2551251531 in words is "two billion, five hundred fifty-one million, two hundred fifty-one thousand, five hundred thirty-one".