2555431531 has 4 divisors (see below), whose sum is σ = 2555572912. Its totient is φ = 2555290152.

The previous prime is 2555431513. The next prime is 2555431553. The reversal of 2555431531 is 1351345552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2555431531 - 2¹¹ = 2555429483 is a prime.

It is a super-2 number, since 2×2555431531² = 13060460619258007922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2555431631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38775 + ... + 81328.

It is an arithmetic number, because the mean of its divisors is an integer number (638893228).

Almost surely, 2^2555431531 is an apocalyptic number.

2555431531 is a deficient number, since it is larger than the sum of its proper divisors (141381).

2555431531 is a wasteful number, since it uses less digits than its factorization.

2555431531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141380.

The product of its digits is 45000, while the sum is 34.

The square root of 2555431531 is about 50551.2762549077. The cubic root of 2555431531 is about 1367.1665257071.

The spelling of 2555431531 in words is "two billion, five hundred fifty-five million, four hundred thirty-one thousand, five hundred thirty-one".