51222202 has 32 divisors (see below), whose sum is σ = 82051200. Its totient is φ = 23950080.

The previous prime is 51222187. The next prime is 51222211. The reversal of 51222202 is 20222215.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257299 + ... + 257497.

It is an arithmetic number, because the mean of its divisors is an integer number (2564100).

Almost surely, 2^51222202 is an apocalyptic number.

51222202 is a deficient number, since it is larger than the sum of its proper divisors (30828998).

51222202 is a wasteful number, since it uses less digits than its factorization.

51222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 51222202 is about 7156.9687717636. The cubic root of 51222202 is about 371.3807721386.

Adding to 51222202 its reverse (20222215), we get a palindrome (71444417).

The spelling of 51222202 in words is "fifty-one million, two hundred twenty-two thousand, two hundred two".