52221481 has 16 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 45239040.

The previous prime is 52221469. The next prime is 52221487. The reversal of 52221481 is 18412225.

52221481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52221481 - 2⁹ = 52220969 is a prime.

It is a super-2 number, since 2×52221481² = 5454166155666722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52221487) 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 15 ways as a sum of consecutive naturals, for example, 26976 + ... + 28846.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^52221481 is an apocalyptic number.

It is an amenable number.

52221481 is a deficient number, since it is larger than the sum of its proper divisors (7532759).

52221481 is a wasteful number, since it uses less digits than its factorization.

52221481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its digits is 1280, while the sum is 25.

The square root of 52221481 is about 7226.4431776635. The cubic root of 52221481 is about 373.7802883699.

The spelling of 52221481 in words is "fifty-two million, two hundred twenty-one thousand, four hundred eighty-one".