52221654 has 48 divisors (see below), whose sum is σ = 120676608. Its totient is φ = 16263936.

The previous prime is 52221649. The next prime is 52221677. The reversal of 52221654 is 45612225.

52221654 is a `hidden beast` number, since 5 + 2 + 2 + 2 + 1 + 654 = 666.

It is a super-2 number, since 2×52221654² = 5454202292991432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47499 + ... + 48585.

It is an arithmetic number, because the mean of its divisors is an integer number (2514096).

Almost surely, 2^52221654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52221654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60338304).

52221654 is an abundant number, since it is smaller than the sum of its proper divisors (68454954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52221654 is a wasteful number, since it uses less digits than its factorization.

52221654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1266 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52221654 is about 7226.4551475810. The cubic root of 52221654 is about 373.7807011242.

Adding to 52221654 its reverse (45612225), we get a palindrome (97833879).

The spelling of 52221654 in words is "fifty-two million, two hundred twenty-one thousand, six hundred fifty-four".