40040563 has 2 divisors, whose sum is σ = 40040564. Its totient is φ = 40040562.

The previous prime is 40040551. The next prime is 40040603. The reversal of 40040563 is 36504004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40040563 - 2⁵ = 40040531 is a prime.

It is not a weakly prime, because it can be changed into another prime (40040513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20020281 + 20020282.

It is an arithmetic number, because the mean of its divisors is an integer number (20020282).

Almost surely, 2^40040563 is an apocalyptic number.

40040563 is a deficient number, since it is larger than the sum of its proper divisors (1).

40040563 is an equidigital number, since it uses as much as digits as its factorization.

40040563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40040563 is about 6327.7612944864. The cubic root of 40040563 is about 342.1107532045.

Adding to 40040563 its reverse (36504004), we get a palindrome (76544567).

The spelling of 40040563 in words is "forty million, forty thousand, five hundred sixty-three".