9916251 has 4 divisors (see below), whose sum is σ = 13221672. Its totient is φ = 6610832.

The previous prime is 9916237. The next prime is 9916279. The reversal of 9916251 is 1526199.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9916251 - 2¹⁸ = 9654107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9916211) 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, 1652706 + ... + 1652711.

It is an arithmetic number, because the mean of its divisors is an integer number (3305418).

Almost surely, 2^9916251 is an apocalyptic number.

9916251 is a deficient number, since it is larger than the sum of its proper divisors (3305421).

9916251 is a wasteful number, since it uses less digits than its factorization.

9916251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305420.

The product of its digits is 4860, while the sum is 33.

The square root of 9916251 is about 3149.0079390183. The cubic root of 9916251 is about 214.8403429802.

The spelling of 9916251 in words is "nine million, nine hundred sixteen thousand, two hundred fifty-one".