91377241 has 4 divisors (see below), whose sum is σ = 91769652. Its totient is φ = 90984832.

The previous prime is 91377203. The next prime is 91377257. The reversal of 91377241 is 14277319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41024025 + 50353216 = 6405^2 + 7096^2 .

It is a cyclic number.

It is not a de Polignac number, because 91377241 - 2⁷ = 91377113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91377197 and 91377206.

It is not an unprimeable number, because it can be changed into a prime (91377281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195856 + ... + 196321.

It is an arithmetic number, because the mean of its divisors is an integer number (22942413).

Almost surely, 2^91377241 is an apocalyptic number.

It is an amenable number.

91377241 is a deficient number, since it is larger than the sum of its proper divisors (392411).

91377241 is a wasteful number, since it uses less digits than its factorization.

91377241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392410.

The product of its digits is 10584, while the sum is 34.

The square root of 91377241 is about 9559.1443654754. The cubic root of 91377241 is about 450.4148289982.

The spelling of 91377241 in words is "ninety-one million, three hundred seventy-seven thousand, two hundred forty-one".