91233523 has 2 divisors, whose sum is σ = 91233524. Its totient is φ = 91233522.

The previous prime is 91233503. The next prime is 91233539. The reversal of 91233523 is 32533219.

It is a strong prime.

It is an emirp because it is prime and its reverse (32533219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91233523 - 2⁹ = 91233011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91233491 and 91233500.

It is not a weakly prime, because it can be changed into another prime (91233503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45616761 + 45616762.

It is an arithmetic number, because the mean of its divisors is an integer number (45616762).

Almost surely, 2^91233523 is an apocalyptic number.

91233523 is a deficient number, since it is larger than the sum of its proper divisors (1).

91233523 is an equidigital number, since it uses as much as digits as its factorization.

91233523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 91233523 is about 9551.6241027377. The cubic root of 91233523 is about 450.1785678149.

The spelling of 91233523 in words is "ninety-one million, two hundred thirty-three thousand, five hundred twenty-three".