99952081 has 4 divisors (see below), whose sum is σ = 102276592. Its totient is φ = 97627572.

The previous prime is 99952063. The next prime is 99952123. The reversal of 99952081 is 18025999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18025999 = 127 ⋅141937.

It is a cyclic number.

It is not a de Polignac number, because 99952081 - 2⁷ = 99951953 is a prime.

It is a super-2 number, since 2×99952081² = 19980836992461122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2324467 = 99952081 / (9 + 9 + 9 + 5 + 2 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99952051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162191 + ... + 1162276.

It is an arithmetic number, because the mean of its divisors is an integer number (25569148).

Almost surely, 2^99952081 is an apocalyptic number.

It is an amenable number.

99952081 is a deficient number, since it is larger than the sum of its proper divisors (2324511).

99952081 is a wasteful number, since it uses less digits than its factorization.

99952081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324510.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 99952081 is about 9997.6037629024. The cubic root of 99952081 is about 464.0847314173.

The spelling of 99952081 in words is "ninety-nine million, nine hundred fifty-two thousand, eighty-one".