51387834 has 16 divisors (see below), whose sum is σ = 102846240. Its totient is φ = 17117520.

The previous prime is 51387811. The next prime is 51387851. The reversal of 51387834 is 43878315.

It is a junction number, because it is equal to n+sod(n) for n = 51387792 and 51387801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14344 + ... + 17564.

It is an arithmetic number, because the mean of its divisors is an integer number (6427890).

Almost surely, 2^51387834 is an apocalyptic number.

51387834 is an abundant number, since it is smaller than the sum of its proper divisors (51458406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51387834 is a wasteful number, since it uses less digits than its factorization.

51387834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885.

The product of its digits is 80640, while the sum is 39.

The square root of 51387834 is about 7168.5308118191. The cubic root of 51387834 is about 371.7806401271.

The spelling of 51387834 in words is "fifty-one million, three hundred eighty-seven thousand, eight hundred thirty-four".