505509045 has 8 divisors (see below), whose sum is σ = 808814496. Its totient is φ = 269604816.

The previous prime is 505509031. The next prime is 505509047. The reversal of 505509045 is 540905505.

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

It is not a de Polignac number, because 505509045 - 2⁴ = 505509029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505508997 and 505509015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505509047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16850287 + ... + 16850316.

It is an arithmetic number, because the mean of its divisors is an integer number (101101812).

Almost surely, 2^505509045 is an apocalyptic number.

It is an amenable number.

505509045 is a deficient number, since it is larger than the sum of its proper divisors (303305451).

505509045 is a wasteful number, since it uses less digits than its factorization.

505509045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33700611.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 505509045 is about 22483.5283040719. The cubic root of 505509045 is about 796.6049063269.

It can be divided in two parts, 50550 and 9045, that added together give a palindrome (59595).

The spelling of 505509045 in words is "five hundred five million, five hundred nine thousand, forty-five".