52552321 has 32 divisors (see below), whose sum is σ = 61395840. Its totient is φ = 44706816.

The previous prime is 52552319. The next prime is 52552327. The reversal of 52552321 is 12325525.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52552321 - 2¹ = 52552319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52552327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784330 + ... + 784396.

It is an arithmetic number, because the mean of its divisors is an integer number (1918620).

Almost surely, 2^52552321 is an apocalyptic number.

It is an amenable number.

52552321 is a deficient number, since it is larger than the sum of its proper divisors (8843519).

52552321 is a wasteful number, since it uses less digits than its factorization.

52552321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its digits is 3000, while the sum is 25.

The square root of 52552321 is about 7249.2979660102. The cubic root of 52552321 is about 374.5679670438.

Adding to 52552321 its reverse (12325525), we get a palindrome (64877846).

The spelling of 52552321 in words is "fifty-two million, five hundred fifty-two thousand, three hundred twenty-one".