43055791 has 4 divisors (see below), whose sum is σ = 43279072. Its totient is φ = 42832512.

The previous prime is 43055743. The next prime is 43055819. The reversal of 43055791 is 19755034.

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

It is a cyclic number.

It is not a de Polignac number, because 43055791 - 2¹¹ = 43053743 is a prime.

It is a super-2 number, since 2×43055791² = 3707602277271362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43055731) 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, 111351 + ... + 111736.

It is an arithmetic number, because the mean of its divisors is an integer number (10819768).

Almost surely, 2^43055791 is an apocalyptic number.

43055791 is a deficient number, since it is larger than the sum of its proper divisors (223281).

43055791 is a wasteful number, since it uses less digits than its factorization.

43055791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223280.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 43055791 is about 6561.6911692033. The cubic root of 43055791 is about 350.4912584485.

The spelling of 43055791 in words is "forty-three million, fifty-five thousand, seven hundred ninety-one".