99955613 has 2 divisors, whose sum is σ = 99955614. Its totient is φ = 99955612.

The previous prime is 99955601. The next prime is 99955643. The reversal of 99955613 is 31655999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61042969 + 38912644 = 7813^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 99955613 - 2¹⁸ = 99693469 is a prime.

It is a super-2 number, since 2×99955613² = 19982249140411538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99955643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49977806 + 49977807.

It is an arithmetic number, because the mean of its divisors is an integer number (49977807).

Almost surely, 2^99955613 is an apocalyptic number.

It is an amenable number.

99955613 is a deficient number, since it is larger than the sum of its proper divisors (1).

99955613 is an equidigital number, since it uses as much as digits as its factorization.

99955613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 328050, while the sum is 47.

The square root of 99955613 is about 9997.7804036696. The cubic root of 99955613 is about 464.0901977966.

The spelling of 99955613 in words is "ninety-nine million, nine hundred fifty-five thousand, six hundred thirteen".