51356432 has 20 divisors (see below), whose sum is σ = 101191440. Its totient is φ = 25242528.

The previous prime is 51356381. The next prime is 51356443. The reversal of 51356432 is 23465315.

It is a junction number, because it is equal to n+sod(n) for n = 51356395 and 51356404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26258 + ... + 28145.

It is an arithmetic number, because the mean of its divisors is an integer number (5059572).

Almost surely, 2^51356432 is an apocalyptic number.

It is an amenable number.

51356432 is a deficient number, since it is larger than the sum of its proper divisors (49835008).

51356432 is a wasteful number, since it uses less digits than its factorization.

51356432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54470 (or 54464 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 51356432 is about 7166.3402096189. The cubic root of 51356432 is about 371.7048956456.

The spelling of 51356432 in words is "fifty-one million, three hundred fifty-six thousand, four hundred thirty-two".