51042122 has 4 divisors (see below), whose sum is σ = 76563186. Its totient is φ = 25521060.

The previous prime is 51042053. The next prime is 51042149. The reversal of 51042122 is 22124015.

51042122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22124015 = 5 ⋅4424803.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 3031081 = 6929^2 + 1741^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51042122.

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 as a sum of consecutive naturals, namely, 12760529 + ... + 12760532.

Almost surely, 2^51042122 is an apocalyptic number.

51042122 is a deficient number, since it is larger than the sum of its proper divisors (25521064).

51042122 is a wasteful number, since it uses less digits than its factorization.

51042122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25521063.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 51042122 is about 7144.3769497417. The cubic root of 51042122 is about 370.9450445696.

Adding to 51042122 its reverse (22124015), we get a palindrome (73166137).

The spelling of 51042122 in words is "fifty-one million, forty-two thousand, one hundred twenty-two".