505123633 has 8 divisors (see below), whose sum is σ = 579340800. Its totient is φ = 431420640.

The previous prime is 505123621. The next prime is 505123651. The reversal of 505123633 is 336321505.

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

It is not a de Polignac number, because 505123633 - 2⁹ = 505123121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505123933) 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, 126433 + ... + 130366.

It is an arithmetic number, because the mean of its divisors is an integer number (72417600).

Almost surely, 2^505123633 is an apocalyptic number.

It is an amenable number.

505123633 is a deficient number, since it is larger than the sum of its proper divisors (74217167).

505123633 is a wasteful number, since it uses less digits than its factorization.

505123633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257087.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 505123633 is about 22474.9556840497. The cubic root of 505123633 is about 796.4024047409.

It can be divided in two parts, 50512 and 3633, that added together give a palindrome (54145).

The spelling of 505123633 in words is "five hundred five million, one hundred twenty-three thousand, six hundred thirty-three".