199752061 has 2 divisors, whose sum is σ = 199752062. Its totient is φ = 199752060.

The previous prime is 199752037. The next prime is 199752067. The reversal of 199752061 is 160257991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148986436 + 50765625 = 12206^2 + 7125^2 .

It is a cyclic number.

It is not a de Polignac number, because 199752061 - 2¹⁷ = 199620989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199752067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99876030 + 99876031.

It is an arithmetic number, because the mean of its divisors is an integer number (99876031).

Almost surely, 2^199752061 is an apocalyptic number.

It is an amenable number.

199752061 is a deficient number, since it is larger than the sum of its proper divisors (1).

199752061 is an equidigital number, since it uses as much as digits as its factorization.

199752061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 199752061 is about 14133.3669378531. The cubic root of 199752061 is about 584.5617883678.

The spelling of 199752061 in words is "one hundred ninety-nine million, seven hundred fifty-two thousand, sixty-one".