505198 has 8 divisors (see below), whose sum is σ = 778392. Its totient is φ = 245736.

The previous prime is 505187. The next prime is 505201. The reversal of 505198 is 891505.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3340 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (97299).

2⁵⁰⁵¹⁹⁸ is an apocalyptic number.

505198 is a deficient number, since it is larger than the sum of its proper divisors (273194).

505198 is a wasteful number, since it uses less digits than its factorization.

505198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 505198 is about 710.7728188388. The cubic root of 505198 is about 79.6441486362.

It can be divided in two parts, 505 and 198, that added together give a triangular number (703 = T₃₇).

The spelling of 505198 in words is "five hundred five thousand, one hundred ninety-eight".