465641221 has 4 divisors (see below), whose sum is σ = 466099200. Its totient is φ = 465183244.

The previous prime is 465641219. The next prime is 465641249. The reversal of 465641221 is 122146564.

It is a happy number.

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 465641221 - 2¹ = 465641219 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 (465641261) 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, 227461 + ... + 229498.

It is an arithmetic number, because the mean of its divisors is an integer number (116524800).

Almost surely, 2^465641221 is an apocalyptic number.

It is an amenable number.

465641221 is a deficient number, since it is larger than the sum of its proper divisors (457979).

465641221 is a wasteful number, since it uses less digits than its factorization.

465641221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457978.

The product of its digits is 11520, while the sum is 31.

The square root of 465641221 is about 21578.7214866868. The cubic root of 465641221 is about 775.0870362188.

Adding to 465641221 its reverse (122146564), we get a palindrome (587787785).

The spelling of 465641221 in words is "four hundred sixty-five million, six hundred forty-one thousand, two hundred twenty-one".