43725791 has 2 divisors, whose sum is σ = 43725792. Its totient is φ = 43725790.

The previous prime is 43725769. The next prime is 43725809. The reversal of 43725791 is 19752734.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43725791 - 2⁶ = 43725727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43725191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21862895 + 21862896.

It is an arithmetic number, because the mean of its divisors is an integer number (21862896).

Almost surely, 2^43725791 is an apocalyptic number.

43725791 is a deficient number, since it is larger than the sum of its proper divisors (1).

43725791 is an equidigital number, since it uses as much as digits as its factorization.

43725791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 43725791 is about 6612.5479960451. The cubic root of 43725791 is about 352.2999310668.

The spelling of 43725791 in words is "forty-three million, seven hundred twenty-five thousand, seven hundred ninety-one".