2531532161 has 2 divisors, whose sum is σ = 2531532162. Its totient is φ = 2531532160.

The previous prime is 2531532097. The next prime is 2531532197. The reversal of 2531532161 is 1612351352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2508106561 + 23425600 = 50081^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531532161 - 2⁶ = 2531532097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2531532461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265766080 + 1265766081.

It is an arithmetic number, because the mean of its divisors is an integer number (1265766081).

Almost surely, 2^2531532161 is an apocalyptic number.

It is an amenable number.

2531532161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531532161 is an equidigital number, since it uses as much as digits as its factorization.

2531532161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 2531532161 is about 50314.3335541672. Note that the first 3 decimals coincide. The cubic root of 2531532161 is about 1362.8910818106.

The spelling of 2531532161 in words is "two billion, five hundred thirty-one million, five hundred thirty-two thousand, one hundred sixty-one".