51200122 has 4 divisors (see below), whose sum is σ = 76800186. Its totient is φ = 25600060.

The previous prime is 51200111. The next prime is 51200129. The reversal of 51200122 is 22100215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22100215 = 5 ⋅4420043.

It can be written as a sum of positive squares in only one way, i.e., 44235801 + 6964321 = 6651^2 + 2639^2 .

It is not an unprimeable number, because it can be changed into a prime (51200129) by changing a digit.

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, 12800029 + ... + 12800032.

Almost surely, 2^51200122 is an apocalyptic number.

51200122 is a deficient number, since it is larger than the sum of its proper divisors (25600064).

51200122 is a wasteful number, since it uses less digits than its factorization.

51200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25600063.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 51200122 is about 7155.4260530034. The cubic root of 51200122 is about 371.3274016231.

Adding to 51200122 its reverse (22100215), we get a palindrome (73300337).

The spelling of 51200122 in words is "fifty-one million, two hundred thousand, one hundred twenty-two".