91377263 has 2 divisors, whose sum is σ = 91377264. Its totient is φ = 91377262.

The previous prime is 91377257. The next prime is 91377281. The reversal of 91377263 is 36277319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91377263 - 2⁶ = 91377199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91377203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45688631 + 45688632.

It is an arithmetic number, because the mean of its divisors is an integer number (45688632).

Almost surely, 2^91377263 is an apocalyptic number.

91377263 is a deficient number, since it is larger than the sum of its proper divisors (1).

91377263 is an equidigital number, since it uses as much as digits as its factorization.

91377263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 38.

The square root of 91377263 is about 9559.1455162059. The cubic root of 91377263 is about 450.4148651456.

The spelling of 91377263 in words is "ninety-one million, three hundred seventy-seven thousand, two hundred sixty-three".