51532222 has 12 divisors (see below), whose sum is σ = 89918640. Its totient is φ = 22085196.

The previous prime is 51532211. The next prime is 51532241. The reversal of 51532222 is 22223515.

51532222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51532193 and 51532202.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 262822 + ... + 263017.

It is an arithmetic number, because the mean of its divisors is an integer number (7493220).

Almost surely, 2^51532222 is an apocalyptic number.

51532222 is a deficient number, since it is larger than the sum of its proper divisors (38386418).

51532222 is a wasteful number, since it uses less digits than its factorization.

51532222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525855 (or 525848 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 51532222 is about 7178.5947092728. The cubic root of 51532222 is about 372.1285205523.

Adding to 51532222 its reverse (22223515), we get a palindrome (73755737).

The spelling of 51532222 in words is "fifty-one million, five hundred thirty-two thousand, two hundred twenty-two".