465221761 has 3 divisors (see below), whose sum is σ = 465243331. Its totient is φ = 465200192.

The previous prime is 465221747. The next prime is 465221819. The reversal of 465221761 is 167122564.

The square root of 465221761 is 21569.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 452838400 = 3519^2 + 21280^2 .

It is not a de Polignac number, because 465221761 - 2⁹ = 465221249 is a prime.

It is a super-2 number, since 2×465221761² = 432862573815882242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (465221261) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10785 + ... + 32353.

Almost surely, 2^465221761 is an apocalyptic number.

465221761 is the 21569-th square number.

465221761 is the 10785-th centered octagonal number.

It is an amenable number.

465221761 is a deficient number, since it is larger than the sum of its proper divisors (21570).

465221761 is an frugal number, since it uses more digits than its factorization.

465221761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43138 (or 21569 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The cubic root of 465221761 is about 774.8542277338.

The spelling of 465221761 in words is "four hundred sixty-five million, two hundred twenty-one thousand, seven hundred sixty-one".