801000161 has 16 divisors (see below), whose sum is σ = 893830224. Its totient is φ = 712986624.

The previous prime is 801000131. The next prime is 801000163. The reversal of 801000161 is 161000108.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8014561 + 792985600 = 2831^2 + 28160^2 .

It is a cyclic number.

It is not a de Polignac number, because 801000161 - 2¹⁸ = 800738017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801000163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46985 + ... + 61721.

It is an arithmetic number, because the mean of its divisors is an integer number (55864389).

Almost surely, 2^801000161 is an apocalyptic number.

It is an amenable number.

801000161 is a deficient number, since it is larger than the sum of its proper divisors (92830063).

801000161 is a wasteful number, since it uses less digits than its factorization.

801000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 801000161 is about 28301.9462404973. The cubic root of 801000161 is about 928.7044669604.

Adding to 801000161 its reverse (161000108), we get a palindrome (962000269).

The spelling of 801000161 in words is "eight hundred one million, one hundred sixty-one", and thus it is an aban number.