51122241 has 6 divisors (see below), whose sum is σ = 73843250. Its totient is φ = 34081488.

The previous prime is 51122237. The next prime is 51122311. The reversal of 51122241 is 14222115.

It can be written as a sum of positive squares in only one way, i.e., 39425841 + 11696400 = 6279^2 + 3420^2 .

It is not a de Polignac number, because 51122241 - 2² = 51122237 is a prime.

It is a super-2 number, since 2×51122241² = 5226967049724162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51122231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2840116 + ... + 2840133.

Almost surely, 2^51122241 is an apocalyptic number.

It is an amenable number.

51122241 is a deficient number, since it is larger than the sum of its proper divisors (22721009).

51122241 is a wasteful number, since it uses less digits than its factorization.

51122241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680255 (or 5680252 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 51122241 is about 7149.9818880889. The cubic root of 51122241 is about 371.1390295138.

Adding to 51122241 its reverse (14222115), we get a palindrome (65344356).

The spelling of 51122241 in words is "fifty-one million, one hundred twenty-two thousand, two hundred forty-one".