80372569 has 2 divisors, whose sum is σ = 80372570. Its totient is φ = 80372568.

The previous prime is 80372531. The next prime is 80372581. The reversal of 80372569 is 96527308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 38937600 = 6437^2 + 6240^2 .

It is a cyclic number.

It is not a de Polignac number, because 80372569 - 2²⁵ = 46818137 is a prime.

It is a super-2 number, since 2×80372569² = 12919499695319522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80372069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40186284 + 40186285.

It is an arithmetic number, because the mean of its divisors is an integer number (40186285).

Almost surely, 2^80372569 is an apocalyptic number.

It is an amenable number.

80372569 is a deficient number, since it is larger than the sum of its proper divisors (1).

80372569 is an equidigital number, since it uses as much as digits as its factorization.

80372569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 80372569 is about 8965.0749578573. The cubic root of 80372569 is about 431.5547986245.

The spelling of 80372569 in words is "eighty million, three hundred seventy-two thousand, five hundred sixty-nine".