52421222 has 32 divisors (see below), whose sum is σ = 91770624. Its totient is φ = 21996000.

The previous prime is 52421219. The next prime is 52421231. The reversal of 52421222 is 22212425.

It is a junction number, because it is equal to n+sod(n) for n = 52421194 and 52421203.

It is a congruent number.

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, 185093 + ... + 185375.

It is an arithmetic number, because the mean of its divisors is an integer number (2867832).

Almost surely, 2^52421222 is an apocalyptic number.

52421222 is a deficient number, since it is larger than the sum of its proper divisors (39349402).

52421222 is a wasteful number, since it uses less digits than its factorization.

52421222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its digits is 640, while the sum is 20.

The square root of 52421222 is about 7240.2501338006. The cubic root of 52421222 is about 374.2562372278.

Adding to 52421222 its reverse (22212425), we get a palindrome (74633647).

The spelling of 52421222 in words is "fifty-two million, four hundred twenty-one thousand, two hundred twenty-two".