505405023 has 8 divisors (see below), whose sum is σ = 674257200. Its totient is φ = 336744768.

The previous prime is 505405007. The next prime is 505405037. The reversal of 505405023 is 320504505.

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

It is not a de Polignac number, because 505405023 - 2⁴ = 505405007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505404984 and 505405002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505405063) 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, 41718 + ... + 52451.

It is an arithmetic number, because the mean of its divisors is an integer number (84282150).

Almost surely, 2^505405023 is an apocalyptic number.

505405023 is a deficient number, since it is larger than the sum of its proper divisors (168852177).

505405023 is a wasteful number, since it uses less digits than its factorization.

505405023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95961.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 505405023 is about 22481.2148915489. The cubic root of 505405023 is about 796.5502616600.

Adding to 505405023 its reverse (320504505), we get a palindrome (825909528).

The spelling of 505405023 in words is "five hundred five million, four hundred five thousand, twenty-three".