199755497 has 2 divisors, whose sum is σ = 199755498. Its totient is φ = 199755496.

The previous prime is 199755473. The next prime is 199755539. The reversal of 199755497 is 794557991.

199755497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195412441 + 4343056 = 13979^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 199755497 - 2¹⁰ = 199754473 is a prime.

It is not a weakly prime, because it can be changed into another prime (199755407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99877748 + 99877749.

It is an arithmetic number, because the mean of its divisors is an integer number (99877749).

Almost surely, 2^199755497 is an apocalyptic number.

It is an amenable number.

199755497 is a deficient number, since it is larger than the sum of its proper divisors (1).

199755497 is an equidigital number, since it uses as much as digits as its factorization.

199755497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3572100, while the sum is 56.

The square root of 199755497 is about 14133.4884936452. The cubic root of 199755497 is about 584.5651400942.

The spelling of 199755497 in words is "one hundred ninety-nine million, seven hundred fifty-five thousand, four hundred ninety-seven".