505333645 has 4 divisors (see below), whose sum is σ = 606400380. Its totient is φ = 404266912.

The previous prime is 505333639. The next prime is 505333681. The reversal of 505333645 is 546333505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 397962601 + 107371044 = 19949^2 + 10362^2 .

It is a cyclic number.

It is not a de Polignac number, because 505333645 - 2¹⁷ = 505202573 is a prime.

It is a super-3 number, since 3×505333645³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505333645.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50533360 + ... + 50533369.

It is an arithmetic number, because the mean of its divisors is an integer number (151600095).

Almost surely, 2^505333645 is an apocalyptic number.

It is an amenable number.

505333645 is a deficient number, since it is larger than the sum of its proper divisors (101066735).

505333645 is a wasteful number, since it uses less digits than its factorization.

505333645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101066734.

The product of its (nonzero) digits is 81000, while the sum is 34.

The square root of 505333645 is about 22479.6273323203. The cubic root of 505333645 is about 796.5127611480.

The spelling of 505333645 in words is "five hundred five million, three hundred thirty-three thousand, six hundred forty-five".