2555515231 has 4 divisors (see below), whose sum is σ = 2580817464. Its totient is φ = 2530213000.

The previous prime is 2555515229. The next prime is 2555515271. The reversal of 2555515231 is 1325155552.

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 2555515231 - 2¹ = 2555515229 is a prime.

It is a super-2 number, since 2×2555515231² = 13061316191745966722, 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 (2555515271) 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, 12650965 + ... + 12651166.

It is an arithmetic number, because the mean of its divisors is an integer number (645204366).

Almost surely, 2^2555515231 is an apocalyptic number.

2555515231 is a deficient number, since it is larger than the sum of its proper divisors (25302233).

2555515231 is a wasteful number, since it uses less digits than its factorization.

2555515231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25302232.

The product of its digits is 37500, while the sum is 34.

The square root of 2555515231 is about 50552.1041204023. The cubic root of 2555515231 is about 1367.1814521605.

The spelling of 2555515231 in words is "two billion, five hundred fifty-five million, five hundred fifteen thousand, two hundred thirty-one".