80372797 has 2 divisors, whose sum is σ = 80372798. Its totient is φ = 80372796.

The previous prime is 80372779. The next prime is 80372813. The reversal of 80372797 is 79727308.

Together with previous prime (80372779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73034116 + 7338681 = 8546^2 + 2709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80372797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80372707) 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, 40186398 + 40186399.

It is an arithmetic number, because the mean of its divisors is an integer number (40186399).

Almost surely, 2^80372797 is an apocalyptic number.

It is an amenable number.

80372797 is a deficient number, since it is larger than the sum of its proper divisors (1).

80372797 is an equidigital number, since it uses as much as digits as its factorization.

80372797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 80372797 is about 8965.0876738602. The cubic root of 80372797 is about 431.5552067007. Note that the first 3 decimals are identical.

The spelling of 80372797 in words is "eighty million, three hundred seventy-two thousand, seven hundred ninety-seven".