199553 has 4 divisors (see below), whose sum is σ = 200448. Its totient is φ = 198660.

The previous prime is 199523. The next prime is 199559. The reversal of 199553 is 355991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 355991 = 317 ⋅1123.

It is a cyclic number.

It is not a de Polignac number, because 199553 - 2⁶ = 199489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 662.

It is an arithmetic number, because the mean of its divisors is an integer number (50112).

2¹⁹⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

199553 is a deficient number, since it is larger than the sum of its proper divisors (895).

199553 is an equidigital number, since it uses as much as digits as its factorization.

199553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its digits is 6075, while the sum is 32.

The square root of 199553 is about 446.7135547529. The cubic root of 199553 is about 58.4367544015.

It can be divided in two parts, 1995 and 53, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 199553 in words is "one hundred ninety-nine thousand, five hundred fifty-three".