472613221 has 4 divisors (see below), whose sum is σ = 473680512. Its totient is φ = 471545932.

The previous prime is 472613213. The next prime is 472613231. The reversal of 472613221 is 122316274.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122316274 = 2 ⋅61158137.

It is a cyclic number.

It is not a de Polignac number, because 472613221 - 2³ = 472613213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 472613221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472613231) 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 3 ways as a sum of consecutive naturals, for example, 532981 + ... + 533866.

It is an arithmetic number, because the mean of its divisors is an integer number (118420128).

Almost surely, 2^472613221 is an apocalyptic number.

It is an amenable number.

472613221 is a deficient number, since it is larger than the sum of its proper divisors (1067291).

472613221 is a wasteful number, since it uses less digits than its factorization.

472613221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067290.

The product of its digits is 4032, while the sum is 28.

The square root of 472613221 is about 21739.6692937128. The cubic root of 472613221 is about 778.9363218833.

Adding to 472613221 its reverse (122316274), we get a palindrome (594929495).

The spelling of 472613221 in words is "four hundred seventy-two million, six hundred thirteen thousand, two hundred twenty-one".