20052321 has 8 divisors (see below), whose sum is σ = 27388704. Its totient is φ = 13042080.

The previous prime is 20052293. The next prime is 20052337. The reversal of 20052321 is 12325002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20052321 - 2⁵ = 20052289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20052321.

It is not an unprimeable number, because it can be changed into a prime (20052341) 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 7 ways as a sum of consecutive naturals, for example, 81391 + ... + 81636.

It is an arithmetic number, because the mean of its divisors is an integer number (3423588).

Almost surely, 2^20052321 is an apocalyptic number.

It is an amenable number.

20052321 is a deficient number, since it is larger than the sum of its proper divisors (7336383).

20052321 is a wasteful number, since it uses less digits than its factorization.

20052321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163071.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20052321 is about 4477.9817998737. The cubic root of 20052321 is about 271.6782572913.

Adding to 20052321 its reverse (12325002), we get a palindrome (32377323).

The spelling of 20052321 in words is "twenty million, fifty-two thousand, three hundred twenty-one".