80716261 has 2 divisors, whose sum is σ = 80716262. Its totient is φ = 80716260.

The previous prime is 80716231. The next prime is 80716283. The reversal of 80716261 is 16261708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 31013761 = 7050^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 80716261 - 2¹¹ = 80714213 is a prime.

It is a super-2 number, since 2×80716261² = 13030229579640242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80716211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40358130 + 40358131.

It is an arithmetic number, because the mean of its divisors is an integer number (40358131).

Almost surely, 2^80716261 is an apocalyptic number.

It is an amenable number.

80716261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80716261 is an equidigital number, since it uses as much as digits as its factorization.

80716261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 80716261 is about 8984.2228934950. Note that the first 3 decimals coincide. The cubic root of 80716261 is about 432.1690671273.

Adding to 80716261 its reverse (16261708), we get a palindrome (96977969).

The spelling of 80716261 in words is "eighty million, seven hundred sixteen thousand, two hundred sixty-one".