5131634561 has 2 divisors, whose sum is σ = 5131634562. Its totient is φ = 5131634560.

The previous prime is 5131634483. The next prime is 5131634567. The reversal of 5131634561 is 1654361315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2957184400 + 2174450161 = 54380^2 + 46631^2 .

It is a cyclic number.

It is not a de Polignac number, because 5131634561 - 2²² = 5127440257 is a prime.

It is not a weakly prime, because it can be changed into another prime (5131634567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565817280 + 2565817281.

It is an arithmetic number, because the mean of its divisors is an integer number (2565817281).

Almost surely, 2^5131634561 is an apocalyptic number.

It is an amenable number.

5131634561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5131634561 is an equidigital number, since it uses as much as digits as its factorization.

5131634561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 5131634561 is about 71635.4281134691. The cubic root of 5131634561 is about 1724.8522801180.

Adding to 5131634561 its reverse (1654361315), we get a palindrome (6785995876).

The spelling of 5131634561 in words is "five billion, one hundred thirty-one million, six hundred thirty-four thousand, five hundred sixty-one".