505199 has 4 divisors (see below), whose sum is σ = 506664. Its totient is φ = 503736.

The previous prime is 505187. The next prime is 505201. The reversal of 505199 is 991505.

505199 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 991505 = 5 ⋅198301.

It is a cyclic number.

It is not a de Polignac number, because 505199 - 2⁸ = 504943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104 + ... + 1010.

It is an arithmetic number, because the mean of its divisors is an integer number (126666).

2⁵⁰⁵¹⁹⁹ is an apocalyptic number.

505199 is a deficient number, since it is larger than the sum of its proper divisors (1465).

505199 is an equidigital number, since it uses as much as digits as its factorization.

505199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 505199 is about 710.7735222981. The cubic root of 505199 is about 79.6442011860.

The spelling of 505199 in words is "five hundred five thousand, one hundred ninety-nine".