90499523 has 2 divisors, whose sum is σ = 90499524. Its totient is φ = 90499522.

The previous prime is 90499441. The next prime is 90499529. The reversal of 90499523 is 32599409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90499523 - 2²⁰ = 89450947 is a prime.

It is not a weakly prime, because it can be changed into another prime (90499529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45249761 + 45249762.

It is an arithmetic number, because the mean of its divisors is an integer number (45249762).

Almost surely, 2^90499523 is an apocalyptic number.

90499523 is a deficient number, since it is larger than the sum of its proper divisors (1).

90499523 is an equidigital number, since it uses as much as digits as its factorization.

90499523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 90499523 is about 9513.1237246238. The cubic root of 90499523 is about 448.9680435191.

The spelling of 90499523 in words is "ninety million, four hundred ninety-nine thousand, five hundred twenty-three".