51982438 has 8 divisors (see below), whose sum is σ = 81363888. Its totient is φ = 24861144.

The previous prime is 51982417. The next prime is 51982439. The reversal of 51982438 is 83428915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51982438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51982439) by changing a digit.

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, 564981 + ... + 565072.

It is an arithmetic number, because the mean of its divisors is an integer number (10170486).

Almost surely, 2^51982438 is an apocalyptic number.

51982438 is a deficient number, since it is larger than the sum of its proper divisors (29381450).

51982438 is a wasteful number, since it uses less digits than its factorization.

51982438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130078.

The product of its digits is 69120, while the sum is 40.

The square root of 51982438 is about 7209.8847424907. The cubic root of 51982438 is about 373.2090914883.

The spelling of 51982438 in words is "fifty-one million, nine hundred eighty-two thousand, four hundred thirty-eight".