91377 has 24 divisors (see below), whose sum is σ = 157248. Its totient is φ = 50400.

The previous prime is 91373. The next prime is 91381. The reversal of 91377 is 77319.

It is an interprime number because it is at equal distance from previous prime (91373) and next prime (91381).

It is not a de Polignac number, because 91377 - 2² = 91373 is a prime.

It is a super-2 number, since 2×91377² = 16699512258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91377.

It is not an unprimeable number, because it can be changed into a prime (91373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1252 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (6552).

2⁹¹³⁷⁷ is an apocalyptic number.

It is an amenable number.

91377 is a deficient number, since it is larger than the sum of its proper divisors (65871).

91377 is a wasteful number, since it uses less digits than its factorization.

91377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 98 counting only the distinct ones).

The product of its digits is 1323, while the sum is 27.

The square root of 91377 is about 302.2862881442. The cubic root of 91377 is about 45.0414433020.

It can be divided in two parts, 913 and 77, that added together give a triangular number (990 = T₄₄).

The spelling of 91377 in words is "ninety-one thousand, three hundred seventy-seven".