51322144 has 12 divisors (see below), whose sum is σ = 101040534. Its totient is φ = 25661056.

The previous prime is 51322087. The next prime is 51322157. The reversal of 51322144 is 44122315.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 9072144 = 6500^2 + 3012^2 .

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, 801877 + ... + 801940.

Almost surely, 2^51322144 is an apocalyptic number.

It is an amenable number.

51322144 is a deficient number, since it is larger than the sum of its proper divisors (49718390).

51322144 is a wasteful number, since it uses less digits than its factorization.

51322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603827 (or 1603819 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 51322144 is about 7163.9475151623. The cubic root of 51322144 is about 371.6221545983.

Adding to 51322144 its reverse (44122315), we get a palindrome (95444459).

The spelling of 51322144 in words is "fifty-one million, three hundred twenty-two thousand, one hundred forty-four".