99985051 has 4 divisors (see below), whose sum is σ = 100975104. Its totient is φ = 98995000.

The previous prime is 99985021. The next prime is 99985057. The reversal of 99985051 is 15058999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15058999 = 101 ⋅149099.

It is a cyclic number.

It is not a de Polignac number, because 99985051 - 2⁷ = 99984923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99984992 and 99985010.

It is not an unprimeable number, because it can be changed into a prime (99985057) 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 in 3 ways as a sum of consecutive naturals, for example, 494875 + ... + 495076.

It is an arithmetic number, because the mean of its divisors is an integer number (25243776).

Almost surely, 2^99985051 is an apocalyptic number.

99985051 is a deficient number, since it is larger than the sum of its proper divisors (990053).

99985051 is a wasteful number, since it uses less digits than its factorization.

99985051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990052.

The product of its (nonzero) digits is 145800, while the sum is 46.

The square root of 99985051 is about 9999.2525220638. The cubic root of 99985051 is about 464.1357531715.

The spelling of 99985051 in words is "ninety-nine million, nine hundred eighty-five thousand, fifty-one".