505089 has 16 divisors (see below), whose sum is σ = 806400. Its totient is φ = 310608.

The previous prime is 505073. The next prime is 505091. The reversal of 505089 is 980505.

It is not a de Polignac number, because 505089 - 2⁴ = 505073 is a prime.

It is a super-4 number, since 4×505089⁴ (a number of 24 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505049) 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, 369 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2⁵⁰⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

505089 is a deficient number, since it is larger than the sum of its proper divisors (301311).

505089 is a wasteful number, since it uses less digits than its factorization.

505089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 505089 is about 710.6961376003. The cubic root of 505089 is about 79.6384202969.

The spelling of 505089 in words is "five hundred five thousand, eighty-nine".