51432943 has 16 divisors (see below), whose sum is σ = 55552000. Its totient is φ = 47472480.

The previous prime is 51432917. The next prime is 51432961. The reversal of 51432943 is 34923415.

It is a cyclic number.

It is not a de Polignac number, because 51432943 - 2⁵ = 51432911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230530 + ... + 230752.

It is an arithmetic number, because the mean of its divisors is an integer number (3472000).

Almost surely, 2^51432943 is an apocalyptic number.

51432943 is a deficient number, since it is larger than the sum of its proper divisors (4119057).

51432943 is a wasteful number, since it uses less digits than its factorization.

51432943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its digits is 12960, while the sum is 31.

The square root of 51432943 is about 7171.6764427852. The cubic root of 51432943 is about 371.8893931580.

The spelling of 51432943 in words is "fifty-one million, four hundred thirty-two thousand, nine hundred forty-three".