199880555 has 24 divisors (see below), whose sum is σ = 285520752. Its totient is φ = 133866432.

The previous prime is 199880531. The next prime is 199880563. The reversal of 199880555 is 555088991.

It is not a de Polignac number, because 199880555 - 2⁶ = 199880491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1049 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (11896698).

Almost surely, 2^199880555 is an apocalyptic number.

199880555 is a deficient number, since it is larger than the sum of its proper divisors (85640197).

199880555 is a wasteful number, since it uses less digits than its factorization.

199880555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19035 (or 19028 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 50.

The square root of 199880555 is about 14137.9119745456. The cubic root of 199880555 is about 584.6871046924.

The spelling of 199880555 in words is "one hundred ninety-nine million, eight hundred eighty thousand, five hundred fifty-five".