199410551 has 4 divisors (see below), whose sum is σ = 199954272. Its totient is φ = 198866832.

The previous prime is 199410517. The next prime is 199410581. The reversal of 199410551 is 155014991.

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 199410551 - 2¹⁸ = 199148407 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 (199410581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271310 + ... + 272043.

It is an arithmetic number, because the mean of its divisors is an integer number (49988568).

Almost surely, 2^199410551 is an apocalyptic number.

199410551 is a deficient number, since it is larger than the sum of its proper divisors (543721).

199410551 is an equidigital number, since it uses as much as digits as its factorization.

199410551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543720.

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 199410551 is about 14121.2800765370. The cubic root of 199410551 is about 584.2284625225.

The spelling of 199410551 in words is "one hundred ninety-nine million, four hundred ten thousand, five hundred fifty-one".