565650161 has 4 divisors (see below), whose sum is σ = 565888932. Its totient is φ = 565411392.

The previous prime is 565650101. The next prime is 565650179. The reversal of 565650161 is 161056565.

565650161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 208629136 + 357021025 = 14444^2 + 18895^2 .

It is a cyclic number.

It is not a de Polignac number, because 565650161 - 2⁶ = 565650097 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (565650101) 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, 115796 + ... + 120581.

It is an arithmetic number, because the mean of its divisors is an integer number (141472233).

Almost surely, 2^565650161 is an apocalyptic number.

It is an amenable number.

565650161 is a deficient number, since it is larger than the sum of its proper divisors (238771).

565650161 is a wasteful number, since it uses less digits than its factorization.

565650161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238770.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 565650161 is about 23783.4009552881. The cubic root of 565650161 is about 827.0199226407.

The spelling of 565650161 in words is "five hundred sixty-five million, six hundred fifty thousand, one hundred sixty-one".