91322377 has 2 divisors, whose sum is σ = 91322378. Its totient is φ = 91322376.

The previous prime is 91322359. The next prime is 91322381. The reversal of 91322377 is 77322319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86322681 + 4999696 = 9291^2 + 2236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91322377 is a prime.

It is not a weakly prime, because it can be changed into another prime (91322177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45661188 + 45661189.

It is an arithmetic number, because the mean of its divisors is an integer number (45661189).

Almost surely, 2^91322377 is an apocalyptic number.

It is an amenable number.

91322377 is a deficient number, since it is larger than the sum of its proper divisors (1).

91322377 is an equidigital number, since it uses as much as digits as its factorization.

91322377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 91322377 is about 9556.2742216828. The cubic root of 91322377 is about 450.3246661150.

The spelling of 91322377 in words is "ninety-one million, three hundred twenty-two thousand, three hundred seventy-seven".