505633441 has 4 divisors (see below), whose sum is σ = 507259584. Its totient is φ = 504007300.

The previous prime is 505633439. The next prime is 505633459. The reversal of 505633441 is 144336505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505633441 - 2¹ = 505633439 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505633411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812605 + ... + 813226.

It is an arithmetic number, because the mean of its divisors is an integer number (126814896).

Almost surely, 2^505633441 is an apocalyptic number.

It is an amenable number.

505633441 is a deficient number, since it is larger than the sum of its proper divisors (1626143).

505633441 is a wasteful number, since it uses less digits than its factorization.

505633441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626142.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 505633441 is about 22486.2945146594. The cubic root of 505633441 is about 796.6702439884.

Adding to 505633441 its reverse (144336505), we get a palindrome (649969946).

The spelling of 505633441 in words is "five hundred five million, six hundred thirty-three thousand, four hundred forty-one".