450213565 has 8 divisors (see below), whose sum is σ = 540658008. Its totient is φ = 359903040.

The previous prime is 450213563. The next prime is 450213571. The reversal of 450213565 is 565312054.

It can be written as a sum of positive squares in 4 ways, for example, as 52330756 + 397882809 = 7234^2 + 19947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 450213565 - 2¹ = 450213563 is a prime.

It is a super-2 number, since 2×450213565² = 405384508220018450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450213563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25926 + ... + 39655.

It is an arithmetic number, because the mean of its divisors is an integer number (67582251).

Almost surely, 2^450213565 is an apocalyptic number.

It is an amenable number.

450213565 is a deficient number, since it is larger than the sum of its proper divisors (90444443).

450213565 is a wasteful number, since it uses less digits than its factorization.

450213565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66959.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 450213565 is about 21218.2366138188. The cubic root of 450213565 is about 766.4306405349.

The spelling of 450213565 in words is "four hundred fifty million, two hundred thirteen thousand, five hundred sixty-five".