5565131261 has 16 divisors (see below), whose sum is σ = 5759006400. Its totient is φ = 5373692928.

The previous prime is 5565131249. The next prime is 5565131309. The reversal of 5565131261 is 1621315655.

It is not a de Polignac number, because 5565131261 - 2⁶ = 5565131197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565131461) 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, 4419650 + ... + 4420908.

It is an arithmetic number, because the mean of its divisors is an integer number (359937900).

Almost surely, 2^5565131261 is an apocalyptic number.

It is an amenable number.

5565131261 is a deficient number, since it is larger than the sum of its proper divisors (193875139).

5565131261 is a wasteful number, since it uses less digits than its factorization.

5565131261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108.

The product of its digits is 27000, while the sum is 35.

The square root of 5565131261 is about 74599.8073791079. The cubic root of 5565131261 is about 1772.1146017708.

The spelling of 5565131261 in words is "five billion, five hundred sixty-five million, one hundred thirty-one thousand, two hundred sixty-one".