51939271 has 8 divisors (see below), whose sum is σ = 53031024. Its totient is φ = 50856960.

The previous prime is 51939259. The next prime is 51939287. The reversal of 51939271 is 17293915.

51939271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51939271 - 2¹⁷ = 51808199 is a prime.

It is a super-2 number, since 2×51939271² = 5395375744022882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51939271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51939071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9351 + ... + 13831.

It is an arithmetic number, because the mean of its divisors is an integer number (6628878).

Almost surely, 2^51939271 is an apocalyptic number.

51939271 is a deficient number, since it is larger than the sum of its proper divisors (1091753).

51939271 is a wasteful number, since it uses less digits than its factorization.

51939271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721.

The product of its digits is 17010, while the sum is 37.

The square root of 51939271 is about 7206.8905222710. The cubic root of 51939271 is about 373.1057567279.

The spelling of 51939271 in words is "fifty-one million, nine hundred thirty-nine thousand, two hundred seventy-one".