505433223 has 16 divisors (see below), whose sum is σ = 766205440. Its totient is φ = 329118552.

The previous prime is 505433219. The next prime is 505433233. The reversal of 505433223 is 322334505.

505433223 is a `hidden beast` number, since 5 + 0 + 5 + 433 + 223 = 666.

It is not a de Polignac number, because 505433223 - 2² = 505433219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505433233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216511 + ... + 218832.

It is an arithmetic number, because the mean of its divisors is an integer number (47887840).

Almost surely, 2^505433223 is an apocalyptic number.

505433223 is a deficient number, since it is larger than the sum of its proper divisors (260772217).

505433223 is a wasteful number, since it uses less digits than its factorization.

505433223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435395 (or 435389 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 505433223 is about 22481.8420731042. The cubic root of 505433223 is about 796.5650763786.

Adding to 505433223 its reverse (322334505), we get a palindrome (827767728).

The spelling of 505433223 in words is "five hundred five million, four hundred thirty-three thousand, two hundred twenty-three".