43995601 has 6 divisors (see below), whose sum is σ = 47640390. Its totient is φ = 40611168.

The previous prime is 43995587. The next prime is 43995607. The reversal of 43995601 is 10659934.

It can be written as a sum of positive squares in 3 ways, for example, as 104976 + 43890625 = 324^2 + 6625^2 .

It is not a de Polignac number, because 43995601 - 2⁵ = 43995569 is a prime.

It is a super-2 number, since 2×43995601² = 3871225814702402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43995607) 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, 129996 + ... + 130333.

It is an arithmetic number, because the mean of its divisors is an integer number (7940065).

Almost surely, 2^43995601 is an apocalyptic number.

It is an amenable number.

43995601 is a deficient number, since it is larger than the sum of its proper divisors (3644789).

43995601 is a wasteful number, since it uses less digits than its factorization.

43995601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260355 (or 260342 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 43995601 is about 6632.9179853214. The cubic root of 43995601 is about 353.0230679872.

It can be divided in two parts, 4399 and 5601, that added together give a 4-th power (10000 = 10⁴).

The spelling of 43995601 in words is "forty-three million, nine hundred ninety-five thousand, six hundred one".