851053361 has 4 divisors (see below), whose sum is σ = 858861300. Its totient is φ = 843245424.

The previous prime is 851053331. The next prime is 851053369. The reversal of 851053361 is 163350158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163350158 = 2 ⋅81675079.

It can be written as a sum of positive squares in 2 ways, for example, as 720385600 + 130667761 = 26840^2 + 11431^2 .

It is a cyclic number.

It is not a de Polignac number, because 851053361 - 2¹⁰ = 851052337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (851053369) 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, 3903806 + ... + 3904023.

It is an arithmetic number, because the mean of its divisors is an integer number (214715325).

Almost surely, 2^851053361 is an apocalyptic number.

It is an amenable number.

851053361 is a deficient number, since it is larger than the sum of its proper divisors (7807939).

851053361 is a wasteful number, since it uses less digits than its factorization.

851053361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807938.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 851053361 is about 29172.8188730537. The cubic root of 851053361 is about 947.6593758215.

The spelling of 851053361 in words is "eight hundred fifty-one million, fifty-three thousand, three hundred sixty-one".