51943927 has 4 divisors (see below), whose sum is σ = 59364496. Its totient is φ = 44523360.

The previous prime is 51943861. The next prime is 51943939. The reversal of 51943927 is 72934915.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51943927 - 2²³ = 43555319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51943927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51943027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710274 + ... + 3710287.

It is an arithmetic number, because the mean of its divisors is an integer number (14841124).

Almost surely, 2^51943927 is an apocalyptic number.

51943927 is a deficient number, since it is larger than the sum of its proper divisors (7420569).

51943927 is an equidigital number, since it uses as much as digits as its factorization.

51943927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420568.

The product of its digits is 68040, while the sum is 40.

The square root of 51943927 is about 7207.2135392258. The cubic root of 51943927 is about 373.1169051869.

The spelling of 51943927 in words is "fifty-one million, nine hundred forty-three thousand, nine hundred twenty-seven".