52221252 has 24 divisors (see below), whose sum is σ = 122029600. Its totient is φ = 17381376.

The previous prime is 52221251. The next prime is 52221259. The reversal of 52221252 is 25212225.

It is not an unprimeable number, because it can be changed into a prime (52221251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6399 + ... + 12057.

Almost surely, 2^52221252 is an apocalyptic number.

It is an amenable number.

52221252 is an abundant number, since it is smaller than the sum of its proper divisors (69808348).

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

52221252 is a wasteful number, since it uses less digits than its factorization.

52221252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435 (or 6433 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 52221252 is about 7226.4273330602. The cubic root of 52221252 is about 373.7797420059.

Adding to 52221252 its reverse (25212225), we get a palindrome (77433477).

The spelling of 52221252 in words is "fifty-two million, two hundred twenty-one thousand, two hundred fifty-two".