43028057 has 4 divisors (see below), whose sum is σ = 43073076. Its totient is φ = 42983040.

The previous prime is 43028053. The next prime is 43028099. The reversal of 43028057 is 75082034.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33362176 + 9665881 = 5776^2 + 3109^2 .

It is a cyclic number.

It is not a de Polignac number, because 43028057 - 2² = 43028053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43028053) 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, 21044 + ... + 22997.

It is an arithmetic number, because the mean of its divisors is an integer number (10768269).

Almost surely, 2^43028057 is an apocalyptic number.

It is an amenable number.

43028057 is a deficient number, since it is larger than the sum of its proper divisors (45019).

43028057 is an equidigital number, since it uses as much as digits as its factorization.

43028057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45018.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 43028057 is about 6559.5775016383. The cubic root of 43028057 is about 350.4159870219.

The spelling of 43028057 in words is "forty-three million, twenty-eight thousand, fifty-seven".