80797261 has 2 divisors, whose sum is σ = 80797262. Its totient is φ = 80797260.

The previous prime is 80797247. The next prime is 80797267. The reversal of 80797261 is 16279708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74063236 + 6734025 = 8606^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 80797261 - 2¹¹ = 80795213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80797267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40398630 + 40398631.

It is an arithmetic number, because the mean of its divisors is an integer number (40398631).

Almost surely, 2^80797261 is an apocalyptic number.

It is an amenable number.

80797261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80797261 is an equidigital number, since it uses as much as digits as its factorization.

80797261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 80797261 is about 8988.7296655312. The cubic root of 80797261 is about 432.3135815492.

The spelling of 80797261 in words is "eighty million, seven hundred ninety-seven thousand, two hundred sixty-one".