505975 has 12 divisors (see below), whose sum is σ = 645544. Its totient is φ = 393120.

The previous prime is 505969. The next prime is 505979. The reversal of 505975 is 579505.

It is not a de Polignac number, because 505975 - 2¹¹ = 503927 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 652 + ... + 1198.

2⁵⁰⁵⁹⁷⁵ is an apocalyptic number.

505975 is a deficient number, since it is larger than the sum of its proper divisors (139569).

505975 is a wasteful number, since it uses less digits than its factorization.

505975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 31.

The square root of 505975 is about 711.3191969854. The cubic root of 505975 is about 79.6849589091.

The spelling of 505975 in words is "five hundred five thousand, nine hundred seventy-five".