51144412 has 12 divisors (see below), whose sum is σ = 97639416. Its totient is φ = 23247440.

The previous prime is 51144403. The next prime is 51144419. The reversal of 51144412 is 21444115.

51144412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144419) by changing a digit.

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, 581143 + ... + 581230.

It is an arithmetic number, because the mean of its divisors is an integer number (8136618).

Almost surely, 2^51144412 is an apocalyptic number.

It is an amenable number.

51144412 is a deficient number, since it is larger than the sum of its proper divisors (46495004).

51144412 is a wasteful number, since it uses less digits than its factorization.

51144412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162388 (or 1162386 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 51144412 is about 7151.5321435340. The cubic root of 51144412 is about 371.1926743594.

Adding to 51144412 its reverse (21444115), we get a palindrome (72588527).

The spelling of 51144412 in words is "fifty-one million, one hundred forty-four thousand, four hundred twelve".