99123553 has 2 divisors, whose sum is σ = 99123554. Its totient is φ = 99123552.

The previous prime is 99123547. The next prime is 99123601. The reversal of 99123553 is 35532199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 32341969 = 8172^2 + 5687^2 .

It is a cyclic number.

It is not a de Polignac number, because 99123553 - 2²⁵ = 65569121 is a prime.

It is not a weakly prime, because it can be changed into another prime (99123533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49561776 + 49561777.

It is an arithmetic number, because the mean of its divisors is an integer number (49561777).

Almost surely, 2^99123553 is an apocalyptic number.

It is an amenable number.

99123553 is a deficient number, since it is larger than the sum of its proper divisors (1).

99123553 is an equidigital number, since it uses as much as digits as its factorization.

99123553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36450, while the sum is 37.

The square root of 99123553 is about 9956.0812069810. The cubic root of 99123553 is about 462.7988667776.

The spelling of 99123553 in words is "ninety-nine million, one hundred twenty-three thousand, five hundred fifty-three".