5171394961 has 2 divisors, whose sum is σ = 5171394962. Its totient is φ = 5171394960.

The previous prime is 5171394881. The next prime is 5171394997. The reversal of 5171394961 is 1694931715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4672542736 + 498852225 = 68356^2 + 22335^2 .

It is a cyclic number.

It is not a de Polignac number, because 5171394961 - 2²⁹ = 4634524049 is a prime.

It is not a weakly prime, because it can be changed into another prime (5171394061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585697480 + 2585697481.

It is an arithmetic number, because the mean of its divisors is an integer number (2585697481).

Almost surely, 2^5171394961 is an apocalyptic number.

It is an amenable number.

5171394961 is a deficient number, since it is larger than the sum of its proper divisors (1).

5171394961 is an equidigital number, since it uses as much as digits as its factorization.

5171394961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 5171394961 is about 71912.4117312165. The cubic root of 5171394961 is about 1729.2955980447.

The spelling of 5171394961 in words is "five billion, one hundred seventy-one million, three hundred ninety-four thousand, nine hundred sixty-one".