51805244 has 12 divisors (see below), whose sum is σ = 90856584. Its totient is φ = 25846224.

The previous prime is 51805219. The next prime is 51805279. The reversal of 51805244 is 44250815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11999 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (7571382).

Almost surely, 2^51805244 is an apocalyptic number.

It is an amenable number.

51805244 is a deficient number, since it is larger than the sum of its proper divisors (39051340).

51805244 is a wasteful number, since it uses less digits than its factorization.

51805244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204 (or 28202 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 51805244 is about 7197.5859842033. The cubic root of 51805244 is about 372.7845526304.

The spelling of 51805244 in words is "fifty-one million, eight hundred five thousand, two hundred forty-four".