91275337 has 12 divisors (see below), whose sum is σ = 95433996. Its totient is φ = 87272640.

The previous prime is 91275311. The next prime is 91275341. The reversal of 91275337 is 73357219.

It can be written as a sum of positive squares in 6 ways, for example, as 19855936 + 71419401 = 4456^2 + 8451^2 .

It is not a de Polignac number, because 91275337 - 2²³ = 82886729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91275296 and 91275305.

It is not an unprimeable number, because it can be changed into a prime (91275347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82963 + ... + 84055.

It is an arithmetic number, because the mean of its divisors is an integer number (7952833).

Almost surely, 2^91275337 is an apocalyptic number.

It is an amenable number.

91275337 is a deficient number, since it is larger than the sum of its proper divisors (4158659).

91275337 is a wasteful number, since it uses less digits than its factorization.

91275337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1191 counting only the distinct ones).

The product of its digits is 39690, while the sum is 37.

The square root of 91275337 is about 9553.8126944168. The cubic root of 91275337 is about 450.2473323472.

The spelling of 91275337 in words is "ninety-one million, two hundred seventy-five thousand, three hundred thirty-seven".