996945251 has 2 divisors, whose sum is σ = 996945252. Its totient is φ = 996945250.

The previous prime is 996945203. The next prime is 996945253. The reversal of 996945251 is 152549699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 996945251 - 2¹⁰ = 996944227 is a prime.

Together with 996945253, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 996945251.

It is not a weakly prime, because it can be changed into another prime (996945253) 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 as a sum of consecutive naturals, namely, 498472625 + 498472626.

It is an arithmetic number, because the mean of its divisors is an integer number (498472626).

Almost surely, 2^996945251 is an apocalyptic number.

996945251 is a deficient number, since it is larger than the sum of its proper divisors (1).

996945251 is an equidigital number, since it uses as much as digits as its factorization.

996945251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 50.

The square root of 996945251 is about 31574.4398366780. The cubic root of 996945251 is about 998.9807117378.

The spelling of 996945251 in words is "nine hundred ninety-six million, nine hundred forty-five thousand, two hundred fifty-one".