51224202 has 12 divisors (see below), whose sum is σ = 110985810. Its totient is φ = 17074728.

The previous prime is 51224167. The next prime is 51224203. The reversal of 51224202 is 20242215.

51224202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45846441 + 5377761 = 6771^2 + 2319^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2845789 = 51224202 / (5 + 1 + 2 + 2 + 4 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (51224203) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 1422877 + ... + 1422912.

Almost surely, 2^51224202 is an apocalyptic number.

51224202 is an abundant number, since it is smaller than the sum of its proper divisors (59761608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51224202 is a wasteful number, since it uses less digits than its factorization.

51224202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845797 (or 2845794 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 51224202 is about 7157.1084943572. The cubic root of 51224202 is about 371.3856056668.

Adding to 51224202 its reverse (20242215), we get a palindrome (71466417).

The spelling of 51224202 in words is "fifty-one million, two hundred twenty-four thousand, two hundred two".