200161601 has 4 divisors (see below), whose sum is σ = 205571412. Its totient is φ = 194751792.

The previous prime is 200161597. The next prime is 200161613. The reversal of 200161601 is 106161002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70224400 + 129937201 = 8380^2 + 11399^2 .

It is a cyclic number.

It is not a de Polignac number, because 200161601 - 2² = 200161597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200161601.

It is not an unprimeable number, because it can be changed into a prime (200161681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704850 + ... + 2704923.

It is an arithmetic number, because the mean of its divisors is an integer number (51392853).

Almost surely, 2^200161601 is an apocalyptic number.

It is an amenable number.

200161601 is a deficient number, since it is larger than the sum of its proper divisors (5409811).

200161601 is an equidigital number, since it uses as much as digits as its factorization.

200161601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409810.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 200161601 is about 14147.8479282186. The cubic root of 200161601 is about 584.9610133027.

The spelling of 200161601 in words is "two hundred million, one hundred sixty-one thousand, six hundred one".