200169261 has 6 divisors (see below), whose sum is σ = 289133390. Its totient is φ = 133446168.

The previous prime is 200169251. The next prime is 200169269. The reversal of 200169261 is 162961002.

It can be written as a sum of positive squares in only one way, i.e., 144144036 + 56025225 = 12006^2 + 7485^2 .

It is not a de Polignac number, because 200169261 - 2¹⁸ = 199907117 is a prime.

It is a super-2 number, since 2×200169261² = 80135466098572242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200169269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11120506 + ... + 11120523.

Almost surely, 2^200169261 is an apocalyptic number.

It is an amenable number.

200169261 is a deficient number, since it is larger than the sum of its proper divisors (88964129).

200169261 is a wasteful number, since it uses less digits than its factorization.

200169261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22241035 (or 22241032 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 200169261 is about 14148.1186381794. The cubic root of 200169261 is about 584.9684751804.

The spelling of 200169261 in words is "two hundred million, one hundred sixty-nine thousand, two hundred sixty-one".