43255993 has 8 divisors (see below), whose sum is σ = 47345760. Its totient is φ = 39192480.

The previous prime is 43255967. The next prime is 43256009. The reversal of 43255993 is 39955234.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43255993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43255903) 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, 3028 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (5918220).

Almost surely, 2^43255993 is an apocalyptic number.

It is an amenable number.

43255993 is a deficient number, since it is larger than the sum of its proper divisors (4089767).

43255993 is a wasteful number, since it uses less digits than its factorization.

43255993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13127.

The product of its digits is 145800, while the sum is 40.

The square root of 43255993 is about 6576.9288425526. The cubic root of 43255993 is about 351.0336599187.

It can be divided in two parts, 43 and 255993, that added together give a square (256036 = 506²).

The spelling of 43255993 in words is "forty-three million, two hundred fifty-five thousand, nine hundred ninety-three".