275563 has 4 divisors (see below), whose sum is σ = 287568. Its totient is φ = 263560.

The previous prime is 275549. The next prime is 275573. The reversal of 275563 is 365572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 275563 - 2⁵ = 275531 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is not an unprimeable number, because it can be changed into a prime (275503) 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, 5968 + ... + 6013.

It is an arithmetic number, because the mean of its divisors is an integer number (71892).

2²⁷⁵⁵⁶³ is an apocalyptic number.

275563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

275563 is a deficient number, since it is larger than the sum of its proper divisors (12005).

275563 is a wasteful number, since it uses less digits than its factorization.

275563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12004.

The product of its digits is 6300, while the sum is 28.

The square root of 275563 is about 524.9409490600. The cubic root of 275563 is about 65.0739198492.

Subtracting 275563 from its reverse (365572), we obtain a palindrome (90009).

It can be divided in two parts, 275 and 563, that added together give a palindrome (838).

The spelling of 275563 in words is "two hundred seventy-five thousand, five hundred sixty-three".