99855533 has 2 divisors, whose sum is σ = 99855534. Its totient is φ = 99855532.

The previous prime is 99855529. The next prime is 99855571. The reversal of 99855533 is 33555899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97970404 + 1885129 = 9898^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 99855533 - 2² = 99855529 is a prime.

It is a super-2 number, since 2×99855533² = 19942254941428178, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99855523) 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, 49927766 + 49927767.

It is an arithmetic number, because the mean of its divisors is an integer number (49927767).

Almost surely, 2^99855533 is an apocalyptic number.

It is an amenable number.

99855533 is a deficient number, since it is larger than the sum of its proper divisors (1).

99855533 is an equidigital number, since it uses as much as digits as its factorization.

99855533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 47.

The square root of 99855533 is about 9992.7740392746. The cubic root of 99855533 is about 463.9352568332.

The spelling of 99855533 in words is "ninety-nine million, eight hundred fifty-five thousand, five hundred thirty-three".