851165353 has 4 divisors (see below), whose sum is σ = 874169860. Its totient is φ = 828160848.

The previous prime is 851165321. The next prime is 851165369. The reversal of 851165353 is 353561158.

851165353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 750102544 + 101062809 = 27388^2 + 10053^2 .

It is a cyclic number.

It is not a de Polignac number, because 851165353 - 2⁵ = 851165321 is a prime.

It is a super-2 number, since 2×851165353² = 1448964916295229218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 23004469 = 851165353 / (8 + 5 + 1 + 1 + 6 + 5 + 3 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851165153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11502198 + ... + 11502271.

It is an arithmetic number, because the mean of its divisors is an integer number (218542465).

Almost surely, 2^851165353 is an apocalyptic number.

It is an amenable number.

851165353 is a deficient number, since it is larger than the sum of its proper divisors (23004507).

851165353 is a wasteful number, since it uses less digits than its factorization.

851165353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23004506.

The product of its digits is 54000, while the sum is 37.

The square root of 851165353 is about 29174.7382678920. The cubic root of 851165353 is about 947.7009421982.

The spelling of 851165353 in words is "eight hundred fifty-one million, one hundred sixty-five thousand, three hundred fifty-three".