99235561 has 2 divisors, whose sum is σ = 99235562. Its totient is φ = 99235560.

The previous prime is 99235553. The next prime is 99235567. The reversal of 99235561 is 16553299.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 44475561 = 7400^2 + 6669^2 .

It is a cyclic number.

It is not a de Polignac number, because 99235561 - 2³ = 99235553 is a prime.

It is not a weakly prime, because it can be changed into another prime (99235567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49617780 + 49617781.

It is an arithmetic number, because the mean of its divisors is an integer number (49617781).

Almost surely, 2^99235561 is an apocalyptic number.

It is an amenable number.

99235561 is a deficient number, since it is larger than the sum of its proper divisors (1).

99235561 is an equidigital number, since it uses as much as digits as its factorization.

99235561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 40.

The square root of 99235561 is about 9961.7047235902. The cubic root of 99235561 is about 462.9731195530.

The spelling of 99235561 in words is "ninety-nine million, two hundred thirty-five thousand, five hundred sixty-one".