51853271 has 4 divisors (see below), whose sum is σ = 52732200. Its totient is φ = 50974344.

The previous prime is 51853199. The next prime is 51853279. The reversal of 51853271 is 17235815.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51853271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51853279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439376 + ... + 439493.

It is an arithmetic number, because the mean of its divisors is an integer number (13183050).

Almost surely, 2^51853271 is an apocalyptic number.

51853271 is a deficient number, since it is larger than the sum of its proper divisors (878929).

51853271 is an equidigital number, since it uses as much as digits as its factorization.

51853271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878928.

The product of its digits is 8400, while the sum is 32.

The square root of 51853271 is about 7200.9215382477. The cubic root of 51853271 is about 372.8997159647.

The spelling of 51853271 in words is "fifty-one million, eight hundred fifty-three thousand, two hundred seventy-one".