5156464561 has 2 divisors, whose sum is σ = 5156464562. Its totient is φ = 5156464560.

The previous prime is 5156464543. The next prime is 5156464571. The reversal of 5156464561 is 1654646515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4864225536 + 292239025 = 69744^2 + 17095^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156464561 - 2¹¹ = 5156462513 is a prime.

It is not a weakly prime, because it can be changed into another prime (5156464571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578232280 + 2578232281.

It is an arithmetic number, because the mean of its divisors is an integer number (2578232281).

Almost surely, 2^5156464561 is an apocalyptic number.

It is an amenable number.

5156464561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156464561 is an equidigital number, since it uses as much as digits as its factorization.

5156464561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 43.

The square root of 5156464561 is about 71808.5270772211. The cubic root of 5156464561 is about 1727.6297701170.

The spelling of 5156464561 in words is "five billion, one hundred fifty-six million, four hundred sixty-four thousand, five hundred sixty-one".