104591491 has 2 divisors, whose sum is σ = 104591492. Its totient is φ = 104591490.

The previous prime is 104591471. The next prime is 104591507. The reversal of 104591491 is 194195401.

It is a strong prime.

It is an emirp because it is prime and its reverse (194195401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104591491 - 2⁷ = 104591363 is a prime.

It is not a weakly prime, because it can be changed into another prime (104591401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52295745 + 52295746.

It is an arithmetic number, because the mean of its divisors is an integer number (52295746).

Almost surely, 2^104591491 is an apocalyptic number.

104591491 is a deficient number, since it is larger than the sum of its proper divisors (1).

104591491 is an equidigital number, since it uses as much as digits as its factorization.

104591491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 104591491 is about 10226.9981421725. The cubic root of 104591491 is about 471.1567868603.

The spelling of 104591491 in words is "one hundred four million, five hundred ninety-one thousand, four hundred ninety-one".