43070057 has 4 divisors (see below), whose sum is σ = 43088016. Its totient is φ = 43052100.

The previous prime is 43070039. The next prime is 43070081. The reversal of 43070057 is 75007034.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75007034 = 2 ⋅37503517.

It is a cyclic number.

It is not a de Polignac number, because 43070057 - 2¹⁸ = 42807913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43070557) by changing a digit.

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, 4703 + ... + 10404.

It is an arithmetic number, because the mean of its divisors is an integer number (10772004).

Almost surely, 2^43070057 is an apocalyptic number.

It is an amenable number.

43070057 is a deficient number, since it is larger than the sum of its proper divisors (17959).

43070057 is a wasteful number, since it uses less digits than its factorization.

43070057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17958.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 43070057 is about 6562.7781464864. The cubic root of 43070057 is about 350.5299644781.

The spelling of 43070057 in words is "forty-three million, seventy thousand, fifty-seven".