505436 has 6 divisors (see below), whose sum is σ = 884520. Its totient is φ = 252716.

The previous prime is 505429. The next prime is 505447. The reversal of 505436 is 634505.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505436.

It is an unprimeable number.

505436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63176 + ... + 63183.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2⁵⁰⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

505436 is a deficient number, since it is larger than the sum of its proper divisors (379084).

505436 is a wasteful number, since it uses less digits than its factorization.

505436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126363 (or 126361 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 505436 is about 710.9402225223. The cubic root of 505436 is about 79.6566535231.

The spelling of 505436 in words is "five hundred five thousand, four hundred thirty-six".