43020563 has 2 divisors, whose sum is σ = 43020564. Its totient is φ = 43020562.

The previous prime is 43020517. The next prime is 43020581. The reversal of 43020563 is 36502034.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43020563 - 2¹⁶ = 42955027 is a prime.

It is not a weakly prime, because it can be changed into another prime (43020163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21510281 + 21510282.

It is an arithmetic number, because the mean of its divisors is an integer number (21510282).

Almost surely, 2^43020563 is an apocalyptic number.

43020563 is a deficient number, since it is larger than the sum of its proper divisors (1).

43020563 is an equidigital number, since it uses as much as digits as its factorization.

43020563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 43020563 is about 6559.0062509499. The cubic root of 43020563 is about 350.3956423905.

Adding to 43020563 its reverse (36502034), we get a palindrome (79522597).

The spelling of 43020563 in words is "forty-three million, twenty thousand, five hundred sixty-three".