143563 has 4 divisors (see below), whose sum is σ = 164080. Its totient is φ = 123048.

The previous prime is 143551. The next prime is 143567. The reversal of 143563 is 365341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365341 = 103 ⋅3547.

It is a cyclic number.

It is not a de Polignac number, because 143563 - 2¹⁷ = 12491 is a prime.

It is a super-2 number, since 2×143563² = 41220669938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10248 + ... + 10261.

It is an arithmetic number, because the mean of its divisors is an integer number (41020).

2¹⁴³⁵⁶³ is an apocalyptic number.

143563 is a deficient number, since it is larger than the sum of its proper divisors (20517).

143563 is an equidigital number, since it uses as much as digits as its factorization.

143563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20516.

The product of its digits is 1080, while the sum is 22.

The square root of 143563 is about 378.8970836520. The cubic root of 143563 is about 52.3617526774.

The spelling of 143563 in words is "one hundred forty-three thousand, five hundred sixty-three".