2985256997 has 2 divisors, whose sum is σ = 2985256998. Its totient is φ = 2985256996.

The previous prime is 2985256993. The next prime is 2985257039. The reversal of 2985256997 is 7996525892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2535223201 + 450033796 = 50351^2 + 21214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2985256997 - 2² = 2985256993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2985256993) 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, 1492628498 + 1492628499.

It is an arithmetic number, because the mean of its divisors is an integer number (1492628499).

Almost surely, 2^2985256997 is an apocalyptic number.

It is an amenable number.

2985256997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2985256997 is an equidigital number, since it uses as much as digits as its factorization.

2985256997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 62.

The square root of 2985256997 is about 54637.5054060853. The cubic root of 2985256997 is about 1439.8831240340.

The spelling of 2985256997 in words is "two billion, nine hundred eighty-five million, two hundred fifty-six thousand, nine hundred ninety-seven".