80445137 has 2 divisors, whose sum is σ = 80445138. Its totient is φ = 80445136.

The previous prime is 80445133. The next prime is 80445179. The reversal of 80445137 is 73154408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74114881 + 6330256 = 8609^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 80445137 - 2² = 80445133 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80445133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40222568 + 40222569.

It is an arithmetic number, because the mean of its divisors is an integer number (40222569).

Almost surely, 2^80445137 is an apocalyptic number.

It is an amenable number.

80445137 is a deficient number, since it is larger than the sum of its proper divisors (1).

80445137 is an equidigital number, since it uses as much as digits as its factorization.

80445137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 80445137 is about 8969.1213059028. The cubic root of 80445137 is about 431.6846424605.

The spelling of 80445137 in words is "eighty million, four hundred forty-five thousand, one hundred thirty-seven".