51992871 has 24 divisors (see below), whose sum is σ = 81861120. Its totient is φ = 29261232.

The previous prime is 51992869. The next prime is 51992933. The reversal of 51992871 is 17829915.

51992871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51992871 - 2¹ = 51992869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51992071) 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 23 ways as a sum of consecutive naturals, for example, 7210 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (3410880).

Almost surely, 2^51992871 is an apocalyptic number.

51992871 is a deficient number, since it is larger than the sum of its proper divisors (29868249).

51992871 is a wasteful number, since it uses less digits than its factorization.

51992871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5356 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 51992871 is about 7210.6082267726. The cubic root of 51992871 is about 373.2340578047.

The spelling of 51992871 in words is "fifty-one million, nine hundred ninety-two thousand, eight hundred seventy-one".