461165221 has 16 divisors (see below), whose sum is σ = 528229440. Its totient is φ = 398724480.

The previous prime is 461165209. The next prime is 461165231. The reversal of 461165221 is 122561164.

It is not a de Polignac number, because 461165221 - 2²⁷ = 326947493 is a prime.

It is a super-2 number, since 2×461165221² = 425346722119957682, which contains 22 as substring.

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 461165221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461165231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10585 + ... + 32161.

It is an arithmetic number, because the mean of its divisors is an integer number (33014340).

Almost surely, 2^461165221 is an apocalyptic number.

It is an amenable number.

461165221 is a deficient number, since it is larger than the sum of its proper divisors (67064219).

461165221 is a wasteful number, since it uses less digits than its factorization.

461165221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21684.

The product of its digits is 2880, while the sum is 28.

The square root of 461165221 is about 21474.7577634766. The cubic root of 461165221 is about 772.5955145598.

The spelling of 461165221 in words is "four hundred sixty-one million, one hundred sixty-five thousand, two hundred twenty-one".