43132081 has 4 divisors (see below), whose sum is σ = 43167600. Its totient is φ = 43096564.

The previous prime is 43132079. The next prime is 43132087. The reversal of 43132081 is 18023134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43132081 - 2¹ = 43132079 is a prime.

It is a super-2 number, since 2×43132081² = 3720752822781122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43132087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15871 + ... + 18388.

It is an arithmetic number, because the mean of its divisors is an integer number (10791900).

Almost surely, 2^43132081 is an apocalyptic number.

It is an amenable number.

43132081 is a deficient number, since it is larger than the sum of its proper divisors (35519).

43132081 is a wasteful number, since it uses less digits than its factorization.

43132081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35518.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 43132081 is about 6567.5018842784. The cubic root of 43132081 is about 350.6981466138.

The spelling of 43132081 in words is "forty-three million, one hundred thirty-two thousand, eighty-one".