43536561 has 8 divisors (see below), whose sum is σ = 58866624. Its totient is φ = 28615440.

The previous prime is 43536553. The next prime is 43536583. The reversal of 43536561 is 16563534.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43536561 - 2³ = 43536553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43536551) 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, 101986 + ... + 102411.

It is an arithmetic number, because the mean of its divisors is an integer number (7358328).

Almost surely, 2^43536561 is an apocalyptic number.

It is an amenable number.

43536561 is a deficient number, since it is larger than the sum of its proper divisors (15330063).

43536561 is a wasteful number, since it uses less digits than its factorization.

43536561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204471.

The product of its digits is 32400, while the sum is 33.

The square root of 43536561 is about 6598.2240792504. The cubic root of 43536561 is about 351.7909856977.

The spelling of 43536561 in words is "forty-three million, five hundred thirty-six thousand, five hundred sixty-one".