43375661 has 8 divisors (see below), whose sum is σ = 50200320. Its totient is φ = 36708048.

The previous prime is 43375643. The next prime is 43375681. The reversal of 43375661 is 16657334.

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 43375661 - 2²² = 39181357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43375601) 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, 38666 + ... + 39771.

It is an arithmetic number, because the mean of its divisors is an integer number (6275040).

Almost surely, 2^43375661 is an apocalyptic number.

It is an amenable number.

43375661 is a deficient number, since it is larger than the sum of its proper divisors (6824659).

43375661 is an equidigital number, since it uses as much as digits as its factorization.

43375661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78523.

The product of its digits is 45360, while the sum is 35.

The square root of 43375661 is about 6586.0201184023. The cubic root of 43375661 is about 351.3570741982.

The spelling of 43375661 in words is "forty-three million, three hundred seventy-five thousand, six hundred sixty-one".