43100161 has 8 divisors (see below), whose sum is σ = 46486440. Its totient is φ = 39724032.

The previous prime is 43100159. The next prime is 43100171. The reversal of 43100161 is 16100134.

It can be written as a sum of positive squares in 4 ways, for example, as 1742400 + 41357761 = 1320^2 + 6431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43100161 - 2¹ = 43100159 is a prime.

It is a super-5 number, since 5×43100161⁵ (a number of 39 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (43100171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7905 + ... + 12193.

It is an arithmetic number, because the mean of its divisors is an integer number (5810805).

Almost surely, 2^43100161 is an apocalyptic number.

It is an amenable number.

43100161 is a deficient number, since it is larger than the sum of its proper divisors (3386279).

43100161 is a wasteful number, since it uses less digits than its factorization.

43100161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 43100161 is about 6565.0712867417. The cubic root of 43100161 is about 350.6116135958.

Adding to 43100161 its reverse (16100134), we get a palindrome (59200295).

The spelling of 43100161 in words is "forty-three million, one hundred thousand, one hundred sixty-one".