275481 has 20 divisors (see below), whose sum is σ = 435600. Its totient is φ = 173016.

The previous prime is 275461. The next prime is 275489. The reversal of 275481 is 184572.

It is not a de Polignac number, because 275481 - 2⁵ = 275449 is a prime.

It is a super-2 number, since 2×275481² = 151779562722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

275481 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (275489) 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 19 ways as a sum of consecutive naturals, for example, 1450 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (21780).

2²⁷⁵⁴⁸¹ is an apocalyptic number.

It is an amenable number.

275481 is a deficient number, since it is larger than the sum of its proper divisors (160119).

275481 is a wasteful number, since it uses less digits than its factorization.

275481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 201 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 275481 is about 524.8628392256. The cubic root of 275481 is about 65.0674644702.

Subtracting from 275481 its reverse (184572), we obtain a palindrome (90909).

The spelling of 275481 in words is "two hundred seventy-five thousand, four hundred eighty-one".