199255571 has 2 divisors, whose sum is σ = 199255572. Its totient is φ = 199255570.

The previous prime is 199255561. The next prime is 199255577. The reversal of 199255571 is 175552991.

It is a strong prime.

It is an emirp because it is prime and its reverse (175552991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199255571 is a prime.

It is not a weakly prime, because it can be changed into another prime (199255577) by changing a digit.

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 as a sum of consecutive naturals, namely, 99627785 + 99627786.

It is an arithmetic number, because the mean of its divisors is an integer number (99627786).

Almost surely, 2^199255571 is an apocalyptic number.

199255571 is a deficient number, since it is larger than the sum of its proper divisors (1).

199255571 is an equidigital number, since it uses as much as digits as its factorization.

199255571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 44.

The square root of 199255571 is about 14115.7915470582. The cubic root of 199255571 is about 584.0770710116.

The spelling of 199255571 in words is "one hundred ninety-nine million, two hundred fifty-five thousand, five hundred seventy-one".