80491507 has 2 divisors, whose sum is σ = 80491508. Its totient is φ = 80491506.

The previous prime is 80491483. The next prime is 80491529. The reversal of 80491507 is 70519408.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80491507 is a prime.

It is not a weakly prime, because it can be changed into another prime (80492507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40245753 + 40245754.

It is an arithmetic number, because the mean of its divisors is an integer number (40245754).

Almost surely, 2^80491507 is an apocalyptic number.

80491507 is a deficient number, since it is larger than the sum of its proper divisors (1).

80491507 is an equidigital number, since it uses as much as digits as its factorization.

80491507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 80491507 is about 8971.7059135930. The cubic root of 80491507 is about 431.7675700837.

The spelling of 80491507 in words is "eighty million, four hundred ninety-one thousand, five hundred seven".