80557199 has 2 divisors, whose sum is σ = 80557200. Its totient is φ = 80557198.

The previous prime is 80557159. The next prime is 80557219. The reversal of 80557199 is 99175508.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80557199 - 2²⁰ = 79508623 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80557129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40278599 + 40278600.

It is an arithmetic number, because the mean of its divisors is an integer number (40278600).

Almost surely, 2^80557199 is an apocalyptic number.

80557199 is a deficient number, since it is larger than the sum of its proper divisors (1).

80557199 is an equidigital number, since it uses as much as digits as its factorization.

80557199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 80557199 is about 8975.3662320821. The cubic root of 80557199 is about 431.8849984665.

The spelling of 80557199 in words is "eighty million, five hundred fifty-seven thousand, one hundred ninety-nine".