516172771 has 2 divisors, whose sum is σ = 516172772. Its totient is φ = 516172770.

The previous prime is 516172759. The next prime is 516172781. The reversal of 516172771 is 177271615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 516172771 - 2¹¹ = 516170723 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516172771.

It is not a weakly prime, because it can be changed into another prime (516172781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258086385 + 258086386.

It is an arithmetic number, because the mean of its divisors is an integer number (258086386).

Almost surely, 2^516172771 is an apocalyptic number.

516172771 is a deficient number, since it is larger than the sum of its proper divisors (1).

516172771 is an equidigital number, since it uses as much as digits as its factorization.

516172771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20580, while the sum is 37.

The square root of 516172771 is about 22719.4359745131. The cubic root of 516172771 is about 802.1674406771.

The spelling of 516172771 in words is "five hundred sixteen million, one hundred seventy-two thousand, seven hundred seventy-one".