5265889561 has 2 divisors, whose sum is σ = 5265889562. Its totient is φ = 5265889560.

The previous prime is 5265889487. The next prime is 5265889567. The reversal of 5265889561 is 1659885625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3097590336 + 2168299225 = 55656^2 + 46565^2 .

It is a cyclic number.

It is not a de Polignac number, because 5265889561 - 2¹⁵ = 5265856793 is a prime.

It is not a weakly prime, because it can be changed into another prime (5265889567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632944780 + 2632944781.

It is an arithmetic number, because the mean of its divisors is an integer number (2632944781).

Almost surely, 2^5265889561 is an apocalyptic number.

It is an amenable number.

5265889561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5265889561 is an equidigital number, since it uses as much as digits as its factorization.

5265889561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184000, while the sum is 55.

The square root of 5265889561 is about 72566.4492792640. The cubic root of 5265889561 is about 1739.7649703468.

The spelling of 5265889561 in words is "five billion, two hundred sixty-five million, eight hundred eighty-nine thousand, five hundred sixty-one".