2561562231 has 16 divisors (see below), whose sum is σ = 3495465600. Its totient is φ = 1668053088.

The previous prime is 2561562151. The next prime is 2561562247. The reversal of 2561562231 is 1322651652.

It is not a de Polignac number, because 2561562231 - 2⁹ = 2561561719 is a prime.

It is a super-2 number, since 2×2561562231² = 13123202126571394722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2561562192 and 2561562201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561562251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18301 + ... + 73878.

It is an arithmetic number, because the mean of its divisors is an integer number (218466600).

Almost surely, 2^2561562231 is an apocalyptic number.

2561562231 is a deficient number, since it is larger than the sum of its proper divisors (933903369).

2561562231 is a wasteful number, since it uses less digits than its factorization.

2561562231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92398.

The product of its digits is 21600, while the sum is 33.

The square root of 2561562231 is about 50611.8783587410. The cubic root of 2561562231 is about 1368.2589692390.

The spelling of 2561562231 in words is "two billion, five hundred sixty-one million, five hundred sixty-two thousand, two hundred thirty-one".