43748457 has 4 divisors (see below), whose sum is σ = 58331280. Its totient is φ = 29165636.

The previous prime is 43748449. The next prime is 43748473. The reversal of 43748457 is 75484734.

43748457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43748457 - 2³ = 43748449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43748437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7291407 + ... + 7291412.

It is an arithmetic number, because the mean of its divisors is an integer number (14582820).

Almost surely, 2^43748457 is an apocalyptic number.

It is an amenable number.

43748457 is a deficient number, since it is larger than the sum of its proper divisors (14582823).

43748457 is a wasteful number, since it uses less digits than its factorization.

43748457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14582822.

The product of its digits is 376320, while the sum is 42.

The square root of 43748457 is about 6614.2616367967. The cubic root of 43748457 is about 352.3607940852.

The spelling of 43748457 in words is "forty-three million, seven hundred forty-eight thousand, four hundred fifty-seven".