275506 has 16 divisors (see below), whose sum is σ = 515520. Its totient is φ = 107280.

The previous prime is 275503. The next prime is 275521. The reversal of 275506 is 605572.

It is a happy number.

275506 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is not an unprimeable number, because it can be changed into a prime (275503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741 + ... + 1048.

It is an arithmetic number, because the mean of its divisors is an integer number (32220).

2²⁷⁵⁵⁰⁶ is an apocalyptic number.

275506 is a deficient number, since it is larger than the sum of its proper divisors (240014).

275506 is a wasteful number, since it uses less digits than its factorization.

275506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 275506 is about 524.8866544312. The cubic root of 275506 is about 65.0694327092.

It can be divided in two parts, 27550 and 6, that added together give a square (27556 = 166²).

The spelling of 275506 in words is "two hundred seventy-five thousand, five hundred six".