91559411 has 2 divisors, whose sum is σ = 91559412. Its totient is φ = 91559410.

The previous prime is 91559407. The next prime is 91559443. The reversal of 91559411 is 11495519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91559411 - 2² = 91559407 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (91559471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45779705 + 45779706.

It is an arithmetic number, because the mean of its divisors is an integer number (45779706).

Almost surely, 2^91559411 is an apocalyptic number.

91559411 is a deficient number, since it is larger than the sum of its proper divisors (1).

91559411 is an equidigital number, since it uses as much as digits as its factorization.

91559411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 35.

The square root of 91559411 is about 9568.6681936412. The cubic root of 91559411 is about 450.7139465260.

The spelling of 91559411 in words is "ninety-one million, five hundred fifty-nine thousand, four hundred eleven".