52221370 has 16 divisors (see below), whose sum is σ = 95189760. Its totient is φ = 20623824.

The previous prime is 52221349. The next prime is 52221397. The reversal of 52221370 is 7312225.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32262 + ... + 33841.

It is an arithmetic number, because the mean of its divisors is an integer number (5949360).

Almost surely, 2^52221370 is an apocalyptic number.

52221370 is a deficient number, since it is larger than the sum of its proper divisors (42968390).

52221370 is a wasteful number, since it uses less digits than its factorization.

52221370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66189.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 52221370 is about 7226.4354975327. The cubic root of 52221370 is about 373.7800235386.

Adding to 52221370 its reverse (7312225), we get a palindrome (59533595).

The spelling of 52221370 in words is "fifty-two million, two hundred twenty-one thousand, three hundred seventy".