51084138 has 32 divisors (see below), whose sum is σ = 120792960. Its totient is φ = 14091840.

The previous prime is 51084119. The next prime is 51084139. The reversal of 51084138 is 83148015.

It is not an unprimeable number, because it can be changed into a prime (51084139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19753 + ... + 22188.

It is an arithmetic number, because the mean of its divisors is an integer number (3774780).

Almost surely, 2^51084138 is an apocalyptic number.

51084138 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51084138 is an abundant number, since it is smaller than the sum of its proper divisors (69708822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51084138 is a wasteful number, since it uses less digits than its factorization.

51084138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41982.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 51084138 is about 7147.3168392062. The cubic root of 51084138 is about 371.0467994329.

It can be divided in two parts, 510 and 84138, that added together give a palindrome (84648).

The spelling of 51084138 in words is "fifty-one million, eighty-four thousand, one hundred thirty-eight".