43628537 has 2 divisors, whose sum is σ = 43628538. Its totient is φ = 43628536.

The previous prime is 43628527. The next prime is 43628567. The reversal of 43628537 is 73582634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31125241 + 12503296 = 5579^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 43628537 - 2⁴ = 43628521 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43628537.

It is not a weakly prime, because it can be changed into another prime (43628527) 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, 21814268 + 21814269.

It is an arithmetic number, because the mean of its divisors is an integer number (21814269).

Almost surely, 2^43628537 is an apocalyptic number.

It is an amenable number.

43628537 is a deficient number, since it is larger than the sum of its proper divisors (1).

43628537 is an equidigital number, since it uses as much as digits as its factorization.

43628537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 43628537 is about 6605.1901562332. The cubic root of 43628537 is about 352.0385444405.

The spelling of 43628537 in words is "forty-three million, six hundred twenty-eight thousand, five hundred thirty-seven".