91268253 has 6 divisors (see below), whose sum is σ = 131831934. Its totient is φ = 60845496.

The previous prime is 91268239. The next prime is 91268263. The reversal of 91268253 is 35286219.

It can be written as a sum of positive squares in only one way, i.e., 89927289 + 1340964 = 9483^2 + 1158^2 .

It is not a de Polignac number, because 91268253 - 2⁸ = 91267997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91268263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5070450 + ... + 5070467.

It is an arithmetic number, because the mean of its divisors is an integer number (21971989).

Almost surely, 2^91268253 is an apocalyptic number.

It is an amenable number.

91268253 is a deficient number, since it is larger than the sum of its proper divisors (40563681).

91268253 is a wasteful number, since it uses less digits than its factorization.

91268253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140923 (or 10140920 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 91268253 is about 9553.4419451839. The cubic root of 91268253 is about 450.2356839482.

The spelling of 91268253 in words is "ninety-one million, two hundred sixty-eight thousand, two hundred fifty-three".