80519591 has 2 divisors, whose sum is σ = 80519592. Its totient is φ = 80519590.

The previous prime is 80519567. The next prime is 80519611. The reversal of 80519591 is 19591508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80519591 - 2¹⁴ = 80503207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80518591) 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, 40259795 + 40259796.

It is an arithmetic number, because the mean of its divisors is an integer number (40259796).

Almost surely, 2^80519591 is an apocalyptic number.

80519591 is a deficient number, since it is larger than the sum of its proper divisors (1).

80519591 is an equidigital number, since it uses as much as digits as its factorization.

80519591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 80519591 is about 8973.2709197928. The cubic root of 80519591 is about 431.8177797307.

The spelling of 80519591 in words is "eighty million, five hundred nineteen thousand, five hundred ninety-one".