99951165 has 20 divisors (see below), whose sum is σ = 179172444. Its totient is φ = 53307072.

The previous prime is 99951121. The next prime is 99951179. The reversal of 99951165 is 56115999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63154809 + 36796356 = 7947^2 + 6066^2 .

It is not a de Polignac number, because 99951165 - 2¹⁴ = 99934781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99951165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 122992 + ... + 123801.

Almost surely, 2^99951165 is an apocalyptic number.

It is an amenable number.

99951165 is a deficient number, since it is larger than the sum of its proper divisors (79221279).

99951165 is a wasteful number, since it uses less digits than its factorization.

99951165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246810 (or 246801 counting only the distinct ones).

The product of its digits is 109350, while the sum is 45.

The square root of 99951165 is about 9997.5579518200. The cubic root of 99951165 is about 464.0833137282.

The spelling of 99951165 in words is "ninety-nine million, nine hundred fifty-one thousand, one hundred sixty-five".