99855529 has 2 divisors, whose sum is σ = 99855530. Its totient is φ = 99855528.

The previous prime is 99855523. The next prime is 99855533. The reversal of 99855529 is 92555899.

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., 65983129 + 33872400 = 8123^2 + 5820^2 .

It is an emirp because it is prime and its reverse (92555899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99855529 - 2³ = 99855521 is a prime.

It is a super-2 number, since 2×99855529² = 19942253343739682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99855521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49927764 + 49927765.

It is an arithmetic number, because the mean of its divisors is an integer number (49927765).

Almost surely, 2^99855529 is an apocalyptic number.

It is an amenable number.

99855529 is a deficient number, since it is larger than the sum of its proper divisors (1).

99855529 is an equidigital number, since it uses as much as digits as its factorization.

99855529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 52.

The square root of 99855529 is about 9992.7738391300. The cubic root of 99855529 is about 463.9352506384.

The spelling of 99855529 in words is "ninety-nine million, eight hundred fifty-five thousand, five hundred twenty-nine".