401563 has 8 divisors (see below), whose sum is σ = 424080. Its totient is φ = 379680.

The previous prime is 401551. The next prime is 401567. The reversal of 401563 is 365104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401563 is a prime.

It is a super-2 number, since 2×401563² = 322505685938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401563.

It is not an unprimeable number, because it can be changed into a prime (401567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2⁴⁰¹⁵⁶³ is an apocalyptic number.

401563 is a deficient number, since it is larger than the sum of its proper divisors (22517).

401563 is a wasteful number, since it uses less digits than its factorization.

401563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 401563 is about 633.6899872966. The cubic root of 401563 is about 73.7764742643.

Adding to 401563 its reverse (365104), we get a palindrome (766667).

The spelling of 401563 in words is "four hundred one thousand, five hundred sixty-three".