90555523 has 2 divisors, whose sum is σ = 90555524. Its totient is φ = 90555522.

The previous prime is 90555499. The next prime is 90555541. The reversal of 90555523 is 32555509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90555523 - 2⁹ = 90555011 is a prime.

It is not a weakly prime, because it can be changed into another prime (90553523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45277761 + 45277762.

It is an arithmetic number, because the mean of its divisors is an integer number (45277762).

Almost surely, 2^90555523 is an apocalyptic number.

90555523 is a deficient number, since it is larger than the sum of its proper divisors (1).

90555523 is an equidigital number, since it uses as much as digits as its factorization.

90555523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 34.

The square root of 90555523 is about 9516.0665718563. The cubic root of 90555523 is about 449.0606297394.

The spelling of 90555523 in words is "ninety million, five hundred fifty-five thousand, five hundred twenty-three".