401040563 has 16 divisors (see below), whose sum is σ = 500898816. Its totient is φ = 311936640.

The previous prime is 401040553. The next prime is 401040571. The reversal of 401040563 is 365040104.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 401040563 - 2⁸ = 401040307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401040553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41270 + ... + 50052.

It is an arithmetic number, because the mean of its divisors is an integer number (31306176).

Almost surely, 2^401040563 is an apocalyptic number.

401040563 is a deficient number, since it is larger than the sum of its proper divisors (99858253).

401040563 is a wasteful number, since it uses less digits than its factorization.

401040563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9394.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 401040563 is about 20025.9971786675. The cubic root of 401040563 is about 737.4446576494. Note that the first 3 decimals are identical.

Adding to 401040563 its reverse (365040104), we get a palindrome (766080667).

The spelling of 401040563 in words is "four hundred one million, forty thousand, five hundred sixty-three".