995817251 has 16 divisors (see below), whose sum is σ = 1171258368. Its totient is φ = 834688800.

The previous prime is 995817241. The next prime is 995817289. The reversal of 995817251 is 152718599.

It is a happy number.

It is not a de Polignac number, because 995817251 - 2⁶ = 995817187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 995817196 and 995817205.

It is not an unprimeable number, because it can be changed into a prime (995817241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138200 + ... + 145226.

It is an arithmetic number, because the mean of its divisors is an integer number (73203648).

Almost surely, 2^995817251 is an apocalyptic number.

995817251 is the 25766-th pentagonal number.

995817251 is a deficient number, since it is larger than the sum of its proper divisors (175441117).

995817251 is a wasteful number, since it uses less digits than its factorization.

995817251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042.

The product of its digits is 226800, while the sum is 47.

The square root of 995817251 is about 31556.5722314703. The cubic root of 995817251 is about 998.6038018714.

The spelling of 995817251 in words is "nine hundred ninety-five million, eight hundred seventeen thousand, two hundred fifty-one".