91082051 has 2 divisors, whose sum is σ = 91082052. Its totient is φ = 91082050.

The previous prime is 91082021. The next prime is 91082053. The reversal of 91082051 is 15028019.

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-91082051 is a prime.

Together with 91082053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91082051.

It is not a weakly prime, because it can be changed into another prime (91082053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45541025 + 45541026.

It is an arithmetic number, because the mean of its divisors is an integer number (45541026).

Almost surely, 2^91082051 is an apocalyptic number.

91082051 is a deficient number, since it is larger than the sum of its proper divisors (1).

91082051 is an equidigital number, since it uses as much as digits as its factorization.

91082051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 91082051 is about 9543.6916861349. The cubic root of 91082051 is about 449.9292909476.

The spelling of 91082051 in words is "ninety-one million, eighty-two thousand, fifty-one".