99523 has 2 divisors, whose sum is σ = 99524. Its totient is φ = 99522.

The previous prime is 99497. The next prime is 99527. The reversal of 99523 is 32599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99523 - 2¹³ = 91331 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 99491 and 99500.

It is not a weakly prime, because it can be changed into another prime (99527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49761 + 49762.

It is an arithmetic number, because the mean of its divisors is an integer number (49762).

2⁹⁹⁵²³ is an apocalyptic number.

99523 is a deficient number, since it is larger than the sum of its proper divisors (1).

99523 is an equidigital number, since it uses as much as digits as its factorization.

99523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 28.

The square root of 99523 is about 315.4726612561. The cubic root of 99523 is about 46.3419694177.

The spelling of 99523 in words is "ninety-nine thousand, five hundred twenty-three".