51388934 has 16 divisors (see below), whose sum is σ = 78405072. Its totient is φ = 25256448.

The previous prime is 51388927. The next prime is 51388937. The reversal of 51388934 is 43988315.

It is a junction number, because it is equal to n+sod(n) for n = 51388891 and 51388900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51388937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76022 + ... + 76694.

It is an arithmetic number, because the mean of its divisors is an integer number (4900317).

Almost surely, 2^51388934 is an apocalyptic number.

51388934 is a deficient number, since it is larger than the sum of its proper divisors (27016138).

51388934 is a wasteful number, since it uses less digits than its factorization.

51388934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its digits is 103680, while the sum is 41.

The square root of 51388934 is about 7168.6075356376. The cubic root of 51388934 is about 371.7832928677.

The spelling of 51388934 in words is "fifty-one million, three hundred eighty-eight thousand, nine hundred thirty-four".