9000161 has 4 divisors (see below), whose sum is σ = 9010992. Its totient is φ = 8989332.

The previous prime is 9000143. The next prime is 9000163. The reversal of 9000161 is 1610009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9000161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9000163) 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, 4055 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (2252748).

Almost surely, 2^9000161 is an apocalyptic number.

It is an amenable number.

9000161 is a deficient number, since it is larger than the sum of its proper divisors (10831).

9000161 is an equidigital number, since it uses as much as digits as its factorization.

9000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 9000161 is about 3000.0268332133. The cubic root of 9000161 is about 208.0096226441.

The spelling of 9000161 in words is "nine million, one hundred sixty-one", and thus it is an aban number.