51432032 has 24 divisors (see below), whose sum is σ = 102400200. Its totient is φ = 25425664.

The previous prime is 51432023. The next prime is 51432047. The reversal of 51432032 is 23023415.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51431995 and 51432013.

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, 6182 + ... + 11877.

It is an arithmetic number, because the mean of its divisors is an integer number (4266675).

Almost surely, 2^51432032 is an apocalyptic number.

It is an amenable number.

51432032 is a deficient number, since it is larger than the sum of its proper divisors (50968168).

51432032 is a wasteful number, since it uses less digits than its factorization.

51432032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18158 (or 18150 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51432032 is about 7171.6129287630. The cubic root of 51432032 is about 371.8871974626.

Adding to 51432032 its reverse (23023415), we get a palindrome (74455447).

The spelling of 51432032 in words is "fifty-one million, four hundred thirty-two thousand, thirty-two".