856097151 has 32 divisors (see below), whose sum is σ = 1434789888. Its totient is φ = 441953280.

The previous prime is 856097113. The next prime is 856097161. The reversal of 856097151 is 151790658.

856097151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 856097151 - 2¹⁴ = 856080767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856097161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20530 + ... + 46191.

It is an arithmetic number, because the mean of its divisors is an integer number (44837184).

Almost surely, 2^856097151 is an apocalyptic number.

856097151 is a deficient number, since it is larger than the sum of its proper divisors (578692737).

856097151 is a wasteful number, since it uses less digits than its factorization.

856097151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66791.

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 856097151 is about 29259.1379059603. The cubic root of 856097151 is about 949.5277989399.

The spelling of 856097151 in words is "eight hundred fifty-six million, ninety-seven thousand, one hundred fifty-one".