413523221 has 4 divisors (see below), whose sum is σ = 417388032. Its totient is φ = 409658412.

The previous prime is 413523203. The next prime is 413523247. The reversal of 413523221 is 122325314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 413523221 - 2⁶ = 413523157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (433523221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1932245 + ... + 1932458.

It is an arithmetic number, because the mean of its divisors is an integer number (104347008).

Almost surely, 2^413523221 is an apocalyptic number.

It is an amenable number.

413523221 is a deficient number, since it is larger than the sum of its proper divisors (3864811).

413523221 is a wasteful number, since it uses less digits than its factorization.

413523221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864810.

The product of its digits is 1440, while the sum is 23.

The square root of 413523221 is about 20335.2703694837. The cubic root of 413523221 is about 745.0177741507.

Adding to 413523221 its reverse (122325314), we get a palindrome (535848535).

The spelling of 413523221 in words is "four hundred thirteen million, five hundred twenty-three thousand, two hundred twenty-one".