51912871 has 8 divisors (see below), whose sum is σ = 53881920. Its totient is φ = 49955808.

The previous prime is 51912859. The next prime is 51912893. The reversal of 51912871 is 17821915.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51912871 - 2⁹ = 51912359 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 (51912821) 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, 6370 + ... + 12016.

It is an arithmetic number, because the mean of its divisors is an integer number (6735240).

Almost surely, 2^51912871 is an apocalyptic number.

51912871 is a deficient number, since it is larger than the sum of its proper divisors (1969049).

51912871 is a wasteful number, since it uses less digits than its factorization.

51912871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993.

The product of its digits is 5040, while the sum is 34.

The square root of 51912871 is about 7205.0587089905. The cubic root of 51912871 is about 373.0425312139.

The spelling of 51912871 in words is "fifty-one million, nine hundred twelve thousand, eight hundred seventy-one".