43195081 has 4 divisors (see below), whose sum is σ = 45073152. Its totient is φ = 41317012.

The previous prime is 43195073. The next prime is 43195111. The reversal of 43195081 is 18059134.

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 43195081 - 2³ = 43195073 is a prime.

It is a super-2 number, since 2×43195081² = 3731630045193122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43195001) 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, 939001 + ... + 939046.

It is an arithmetic number, because the mean of its divisors is an integer number (11268288).

Almost surely, 2^43195081 is an apocalyptic number.

It is an amenable number.

43195081 is a deficient number, since it is larger than the sum of its proper divisors (1878071).

43195081 is a wasteful number, since it uses less digits than its factorization.

43195081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878070.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 43195081 is about 6572.2964784008. The cubic root of 43195081 is about 350.8688102622.

The spelling of 43195081 in words is "forty-three million, one hundred ninety-five thousand, eighty-one".