275445 has 12 divisors (see below), whose sum is σ = 477516. Its totient is φ = 146880.

The previous prime is 275423. The next prime is 275447. The reversal of 275445 is 544572.

It can be written as a sum of positive squares in 2 ways, for example, as 62001 + 213444 = 249^2 + 462^2 .

It is not a de Polignac number, because 275445 - 2¹⁵ = 242677 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3016 + ... + 3105.

It is an arithmetic number, because the mean of its divisors is an integer number (39793).

2²⁷⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

275445 is a deficient number, since it is larger than the sum of its proper divisors (202071).

275445 is a wasteful number, since it uses less digits than its factorization.

275445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132 (or 6129 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 275445 is about 524.8285434311. The cubic root of 275445 is about 65.0646299967.

The spelling of 275445 in words is "two hundred seventy-five thousand, four hundred forty-five".