43541997 has 4 divisors (see below), whose sum is σ = 58056000. Its totient is φ = 29027996.

The previous prime is 43541969. The next prime is 43542001. The reversal of 43541997 is 79914534.

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 43541997 - 2⁸ = 43541741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43541297) 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, 7256997 + ... + 7257002.

It is an arithmetic number, because the mean of its divisors is an integer number (14514000).

Almost surely, 2^43541997 is an apocalyptic number.

It is an amenable number.

43541997 is a deficient number, since it is larger than the sum of its proper divisors (14514003).

43541997 is a wasteful number, since it uses less digits than its factorization.

43541997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14514002.

The product of its digits is 136080, while the sum is 42.

The square root of 43541997 is about 6598.6359954160. The cubic root of 43541997 is about 351.8056266965.

The spelling of 43541997 in words is "forty-three million, five hundred forty-one thousand, nine hundred ninety-seven".