91596539 has 2 divisors, whose sum is σ = 91596540. Its totient is φ = 91596538.

The previous prime is 91596523. The next prime is 91596553. The reversal of 91596539 is 93569519.

It is a strong prime.

It is an emirp because it is prime and its reverse (93569519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91596539 - 2⁴ = 91596523 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91596493 and 91596502.

It is not a weakly prime, because it can be changed into another prime (91596509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45798269 + 45798270.

It is an arithmetic number, because the mean of its divisors is an integer number (45798270).

Almost surely, 2^91596539 is an apocalyptic number.

91596539 is a deficient number, since it is larger than the sum of its proper divisors (1).

91596539 is an equidigital number, since it uses as much as digits as its factorization.

91596539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 328050, while the sum is 47.

The square root of 91596539 is about 9570.6080789049. The cubic root of 91596539 is about 450.7748608759.

The spelling of 91596539 in words is "ninety-one million, five hundred ninety-six thousand, five hundred thirty-nine".