851020053 has 8 divisors (see below), whose sum is σ = 1221977568. Its totient is φ = 523704624.

The previous prime is 851020039. The next prime is 851020069. The reversal of 851020053 is 350020158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-851020053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851020003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10910475 + ... + 10910552.

It is an arithmetic number, because the mean of its divisors is an integer number (152747196).

Almost surely, 2^851020053 is an apocalyptic number.

It is an amenable number.

851020053 is a deficient number, since it is larger than the sum of its proper divisors (370957515).

851020053 is a wasteful number, since it uses less digits than its factorization.

851020053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821043.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 851020053 is about 29172.2479935983. The cubic root of 851020053 is about 947.6470126914.

The spelling of 851020053 in words is "eight hundred fifty-one million, twenty thousand, fifty-three".