51018782 has 16 divisors (see below), whose sum is σ = 80274240. Its totient is φ = 24290208.

The previous prime is 51018757. The next prime is 51018791. The reversal of 51018782 is 28781015.

It is a happy number.

51018782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51018782² = 5205832233527048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3857 + ... + 10812.

It is an arithmetic number, because the mean of its divisors is an integer number (5017140).

Almost surely, 2^51018782 is an apocalyptic number.

51018782 is a deficient number, since it is larger than the sum of its proper divisors (29255458).

51018782 is a wasteful number, since it uses less digits than its factorization.

51018782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14755.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 51018782 is about 7142.7433105215. The cubic root of 51018782 is about 370.8884953445. Note that the first 3 decimals are identical.

Adding to 51018782 its reverse (28781015), we get a palindrome (79799797).

The spelling of 51018782 in words is "fifty-one million, eighteen thousand, seven hundred eighty-two".