275 has 6 divisors (see below), whose sum is σ = 372. Its totient is φ = 200.

The previous prime is 271. The next prime is 277. The reversal of 275 is 572.

Adding to 275 its sum of digits (14), we get a square (289 = 17^{2}).

It can be divided in two parts, 27 and 5, that added together give a 5-th power (32 = 2^{5}).

275 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 275 - 2^{2} = 271 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6, base 9, base 12, base 14, base 15 and base 16.

It is a nialpdrome in base 5 and base 7.

It is not an unprimeable number, because it can be changed into a prime (271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20 + ... + 30.

It is an arithmetic number, because the mean of its divisors is an integer number (62).

275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

275 is a deficient number, since it is larger than the sum of its proper divisors (97).

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

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

The sum of its prime factors is 21 (or 16 counting only the distinct ones).

The product of its digits is 70, while the sum is 14.

The square root of 275 is about 16.5831239518. The cubic root of 275 is about 6.5029572343.

The spelling of 275 in words is "two hundred seventy-five", and thus it is an aban number.

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •