40563 has 6 divisors (see below), whose sum is σ = 58604. Its totient is φ = 27036.

The previous prime is 40559. The next prime is 40577. The reversal of 40563 is 36504.

It is a happy number.

It is not a de Polignac number, because 40563 - 2² = 40559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2245 + ... + 2262.

2⁴⁰⁵⁶³ is an apocalyptic number.

40563 is a deficient number, since it is larger than the sum of its proper divisors (18041).

40563 is a wasteful number, since it uses less digits than its factorization.

40563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513 (or 4510 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40563 is about 201.4025819100. The cubic root of 40563 is about 34.3592247175.

The spelling of 40563 in words is "forty thousand, five hundred sixty-three".