43145457 has 4 divisors (see below), whose sum is σ = 57527280. Its totient is φ = 28763636.

The previous prime is 43145449. The next prime is 43145467. The reversal of 43145457 is 75454134.

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 43145457 - 2³ = 43145449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43145437) 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, 7190907 + ... + 7190912.

It is an arithmetic number, because the mean of its divisors is an integer number (14381820).

Almost surely, 2^43145457 is an apocalyptic number.

It is an amenable number.

43145457 is a deficient number, since it is larger than the sum of its proper divisors (14381823).

43145457 is a wasteful number, since it uses less digits than its factorization.

43145457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381822.

The product of its digits is 33600, while the sum is 33.

The square root of 43145457 is about 6568.5201529721. The cubic root of 43145457 is about 350.7343953756.

The spelling of 43145457 in words is "forty-three million, one hundred forty-five thousand, four hundred fifty-seven".