43256155 has 4 divisors (see below), whose sum is σ = 51907392. Its totient is φ = 34604920.

The previous prime is 43256131. The next prime is 43256167. The reversal of 43256155 is 55165234.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43256155 - 2¹⁵ = 43223387 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325611 + ... + 4325620.

It is an arithmetic number, because the mean of its divisors is an integer number (12976848).

Almost surely, 2^43256155 is an apocalyptic number.

43256155 is a deficient number, since it is larger than the sum of its proper divisors (8651237).

43256155 is an equidigital number, since it uses as much as digits as its factorization.

43256155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651236.

The product of its digits is 18000, while the sum is 31.

The square root of 43256155 is about 6576.9411583197. The cubic root of 43256155 is about 351.0340981422.

The spelling of 43256155 in words is "forty-three million, two hundred fifty-six thousand, one hundred fifty-five".