8951551657 has 2 divisors, whose sum is σ = 8951551658. Its totient is φ = 8951551656.

The previous prime is 8951551571. The next prime is 8951551669. The reversal of 8951551657 is 7561551598.

8951551657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6324066576 + 2627485081 = 79524^2 + 51259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8951551657 is a prime.

It is not a weakly prime, because it can be changed into another prime (8951551157) 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, 4475775828 + 4475775829.

It is an arithmetic number, because the mean of its divisors is an integer number (4475775829).

Almost surely, 2^8951551657 is an apocalyptic number.

It is an amenable number.

8951551657 is a deficient number, since it is larger than the sum of its proper divisors (1).

8951551657 is an equidigital number, since it uses as much as digits as its factorization.

8951551657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890000, while the sum is 52.

The square root of 8951551657 is about 94612.6400487800. The cubic root of 8951551657 is about 2076.3446382693.

The spelling of 8951551657 in words is "eight billion, nine hundred fifty-one million, five hundred fifty-one thousand, six hundred fifty-seven".