80072257 has 2 divisors, whose sum is σ = 80072258. Its totient is φ = 80072256.

The previous prime is 80072233. The next prime is 80072297. The reversal of 80072257 is 75227008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 3964081 = 8724^2 + 1991^2 .

It is a cyclic number.

It is not a de Polignac number, because 80072257 - 2¹¹ = 80070209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80072297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40036128 + 40036129.

It is an arithmetic number, because the mean of its divisors is an integer number (40036129).

Almost surely, 2^80072257 is an apocalyptic number.

It is an amenable number.

80072257 is a deficient number, since it is larger than the sum of its proper divisors (1).

80072257 is an equidigital number, since it uses as much as digits as its factorization.

80072257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 80072257 is about 8948.3102874230. The cubic root of 80072257 is about 431.0166264583.

The spelling of 80072257 in words is "eighty million, seventy-two thousand, two hundred fifty-seven".