91252093 has 4 divisors (see below), whose sum is σ = 91421308. Its totient is φ = 91082880.

The previous prime is 91252087. The next prime is 91252123. The reversal of 91252093 is 39025219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39025219 = 967 ⋅40357.

It can be written as a sum of positive squares in 2 ways, for example, as 65577604 + 25674489 = 8098^2 + 5067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91252093 is a prime.

It is a super-3 number, since 3×91252093³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91252033) 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, 83796 + ... + 84877.

It is an arithmetic number, because the mean of its divisors is an integer number (22855327).

Almost surely, 2^91252093 is an apocalyptic number.

It is an amenable number.

91252093 is a deficient number, since it is larger than the sum of its proper divisors (169215).

91252093 is a wasteful number, since it uses less digits than its factorization.

91252093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169214.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 91252093 is about 9552.5961392702. The cubic root of 91252093 is about 450.2091093988.

The spelling of 91252093 in words is "ninety-one million, two hundred fifty-two thousand, ninety-three".