51810382 has 16 divisors (see below), whose sum is σ = 83839392. Its totient is φ = 23870880.

The previous prime is 51810379. The next prime is 51810383. The reversal of 51810382 is 28301815.

It is a self number, because there is not a number n which added to its sum of digits gives 51810382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51810383) 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 7 ways as a sum of consecutive naturals, for example, 17532 + ... + 20272.

It is an arithmetic number, because the mean of its divisors is an integer number (5239962).

Almost surely, 2^51810382 is an apocalyptic number.

51810382 is a deficient number, since it is larger than the sum of its proper divisors (32029010).

51810382 is a wasteful number, since it uses less digits than its factorization.

51810382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 51810382 is about 7197.9429005793. The cubic root of 51810382 is about 372.7968763745.

The spelling of 51810382 in words is "fifty-one million, eight hundred ten thousand, three hundred eighty-two".