51943929 has 12 divisors (see below), whose sum is σ = 73097136. Its totient is φ = 32806008.

The previous prime is 51943861. The next prime is 51943939. The reversal of 51943929 is 92934915.

It is not a de Polignac number, because 51943929 - 2⁸ = 51943673 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51943939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22899 + ... + 25064.

It is an arithmetic number, because the mean of its divisors is an integer number (6091428).

Almost surely, 2^51943929 is an apocalyptic number.

It is an amenable number.

51943929 is a deficient number, since it is larger than the sum of its proper divisors (21153207).

51943929 is a wasteful number, since it uses less digits than its factorization.

51943929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48004 (or 47985 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 51943929 is about 7207.2136779757. The cubic root of 51943929 is about 373.1169099756.

The spelling of 51943929 in words is "fifty-one million, nine hundred forty-three thousand, nine hundred twenty-nine".