275257 has 4 divisors (see below), whose sum is σ = 276340. Its totient is φ = 274176.

The previous prime is 275251. The next prime is 275263. The reversal of 275257 is 752572.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (275251) and next prime (275263).

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 95481 = 424^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 275257 - 2⁷ = 275129 is a prime.

It is a Duffinian number.

275257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (275251) 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, 73 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (69085).

2²⁷⁵²⁵⁷ is an apocalyptic number.

It is an amenable number.

275257 is a deficient number, since it is larger than the sum of its proper divisors (1083).

275257 is an equidigital number, since it uses as much as digits as its factorization.

275257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082.

The product of its digits is 4900, while the sum is 28.

The square root of 275257 is about 524.6494067470. The cubic root of 275257 is about 65.0498237323.

It can be divided in two parts, 2752 and 57, that added together give a square (2809 = 53²).

The spelling of 275257 in words is "two hundred seventy-five thousand, two hundred fifty-seven".