43361601 has 24 divisors (see below), whose sum is σ = 61316640. Its totient is φ = 27251136.

The previous prime is 43361597. The next prime is 43361609. The reversal of 43361601 is 10616334.

It is not a de Polignac number, because 43361601 - 2² = 43361597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43361609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141090 + ... + 141396.

It is an arithmetic number, because the mean of its divisors is an integer number (2554860).

Almost surely, 2^43361601 is an apocalyptic number.

It is an amenable number.

43361601 is a deficient number, since it is larger than the sum of its proper divisors (17955039).

43361601 is a wasteful number, since it uses less digits than its factorization.

43361601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 43361601 is about 6584.9526194195. The cubic root of 43361601 is about 351.3191065591.

Adding to 43361601 its reverse (10616334), we get a palindrome (53977935).

The spelling of 43361601 in words is "forty-three million, three hundred sixty-one thousand, six hundred one".