43696161 has 6 divisors (see below), whose sum is σ = 63116690. Its totient is φ = 29130768.

The previous prime is 43696157. The next prime is 43696189. The reversal of 43696161 is 16169634.

43696161 is a `hidden beast` number, since 4 + 36 + 9 + 616 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43560000 + 136161 = 6600^2 + 369^2 .

It is not a de Polignac number, because 43696161 - 2² = 43696157 is a prime.

It is a super-2 number, since 2×43696161² = 3818708972275842, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43696111) 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, 2427556 + ... + 2427573.

Almost surely, 2^43696161 is an apocalyptic number.

It is an amenable number.

43696161 is a deficient number, since it is larger than the sum of its proper divisors (19420529).

43696161 is a wasteful number, since it uses less digits than its factorization.

43696161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855135 (or 4855132 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 43696161 is about 6610.3071789441. The cubic root of 43696161 is about 352.2203365036.

The spelling of 43696161 in words is "forty-three million, six hundred ninety-six thousand, one hundred sixty-one".