500261161 has 2 divisors, whose sum is σ = 500261162. Its totient is φ = 500261160.

The previous prime is 500261147. The next prime is 500261171. The reversal of 500261161 is 161162005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498673561 + 1587600 = 22331^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 500261161 - 2⁵ = 500261129 is a prime.

It is a super-2 number, since 2×500261161² = 500522458410135842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (500261171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250130580 + 250130581.

It is an arithmetic number, because the mean of its divisors is an integer number (250130581).

Almost surely, 2^500261161 is an apocalyptic number.

It is an amenable number.

500261161 is a deficient number, since it is larger than the sum of its proper divisors (1).

500261161 is an equidigital number, since it uses as much as digits as its factorization.

500261161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 500261161 is about 22366.5187501319. The cubic root of 500261161 is about 793.8386910134.

The spelling of 500261161 in words is "five hundred million, two hundred sixty-one thousand, one hundred sixty-one".