51142044 has 12 divisors (see below), whose sum is σ = 119331464. Its totient is φ = 17047344.

The previous prime is 51142031. The next prime is 51142061. The reversal of 51142044 is 44024115.

It is a happy number.

51142044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 51142044.

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 3 ways as a sum of consecutive naturals, for example, 2130907 + ... + 2130930.

Almost surely, 2^51142044 is an apocalyptic number.

It is an amenable number.

51142044 is an abundant number, since it is smaller than the sum of its proper divisors (68189420).

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

51142044 is a wasteful number, since it uses less digits than its factorization.

51142044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261844 (or 4261842 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 51142044 is about 7151.3665826889. The cubic root of 51142044 is about 371.1869454975.

Adding to 51142044 its reverse (44024115), we get a palindrome (95166159).

The spelling of 51142044 in words is "fifty-one million, one hundred forty-two thousand, forty-four".