199051 has 4 divisors (see below), whose sum is σ = 205504. Its totient is φ = 192600.

The previous prime is 199049. The next prime is 199081. The reversal of 199051 is 150991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199051 - 2¹ = 199049 is a prime.

It is a Duffinian number.

199051 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199021) 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, 3180 + ... + 3241.

It is an arithmetic number, because the mean of its divisors is an integer number (51376).

2¹⁹⁹⁰⁵¹ is an apocalyptic number.

199051 is a deficient number, since it is larger than the sum of its proper divisors (6453).

199051 is an equidigital number, since it uses as much as digits as its factorization.

199051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 199051 is about 446.1513196215. The cubic root of 199051 is about 58.3877116511.

The spelling of 199051 in words is "one hundred ninety-nine thousand, fifty-one".