51122144 has 12 divisors (see below), whose sum is σ = 100646784. Its totient is φ = 25561056.

The previous prime is 51122129. The next prime is 51122153. The reversal of 51122144 is 44122115.

It is a happy number.

It is a super-2 number, since 2×51122144² = 5226947214313472, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 798752 + ... + 798815.

It is an arithmetic number, because the mean of its divisors is an integer number (8387232).

Almost surely, 2^51122144 is an apocalyptic number.

It is an amenable number.

51122144 is a deficient number, since it is larger than the sum of its proper divisors (49524640).

51122144 is a wasteful number, since it uses less digits than its factorization.

51122144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597577 (or 1597569 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 51122144 is about 7149.9751048518. The cubic root of 51122144 is about 371.1387947789.

Adding to 51122144 its reverse (44122115), we get a palindrome (95244259).

The spelling of 51122144 in words is "fifty-one million, one hundred twenty-two thousand, one hundred forty-four".