505434023 has 16 divisors (see below), whose sum is σ = 531074016. Its totient is φ = 480504960.

The previous prime is 505433989. The next prime is 505434031. The reversal of 505434023 is 320434505.

It is a cyclic number.

It is not a de Polignac number, because 505434023 - 2⁸ = 505433767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505433983 and 505434001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505434043) 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, 731108 + ... + 731798.

It is an arithmetic number, because the mean of its divisors is an integer number (33192126).

Almost surely, 2^505434023 is an apocalyptic number.

505434023 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

505434023 is a deficient number, since it is larger than the sum of its proper divisors (25639993).

505434023 is a wasteful number, since it uses less digits than its factorization.

505434023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 505434023 is about 22481.8598652336. The cubic root of 505434023 is about 796.5654966463.

Adding to 505434023 its reverse (320434505), we get a palindrome (825868528).

The spelling of 505434023 in words is "five hundred five million, four hundred thirty-four thousand, twenty-three".