856256101 has 2 divisors, whose sum is σ = 856256102. Its totient is φ = 856256100.

The previous prime is 856256099. The next prime is 856256111. The reversal of 856256101 is 101652658.

It is a happy number.

856256101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637512001 + 218744100 = 25249^2 + 14790^2 .

It is a cyclic number.

It is not a de Polignac number, because 856256101 - 2¹ = 856256099 is a prime.

Together with 856256099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856256111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428128050 + 428128051.

It is an arithmetic number, because the mean of its divisors is an integer number (428128051).

Almost surely, 2^856256101 is an apocalyptic number.

It is an amenable number.

856256101 is a deficient number, since it is larger than the sum of its proper divisors (1).

856256101 is an equidigital number, since it uses as much as digits as its factorization.

856256101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 856256101 is about 29261.8540253348. The cubic root of 856256101 is about 949.5865610028.

The spelling of 856256101 in words is "eight hundred fifty-six million, two hundred fifty-six thousand, one hundred one".