275145 has 32 divisors (see below), whose sum is σ = 508032. Its totient is φ = 125952.

The previous prime is 275131. The next prime is 275147. The reversal of 275145 is 541572.

It is not a de Polignac number, because 275145 - 2⁴ = 275129 is a prime.

It is an Ulam number.

275145 is a lucky number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 275145.

It is not an unprimeable number, because it can be changed into a prime (275147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3274 + ... + 3356.

It is an arithmetic number, because the mean of its divisors is an integer number (15876).

2²⁷⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

275145 is a deficient number, since it is larger than the sum of its proper divisors (232887).

275145 is a wasteful number, since it uses less digits than its factorization.

275145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121.

The product of its digits is 1400, while the sum is 24.

The square root of 275145 is about 524.5426579412. The cubic root of 275145 is about 65.0409997743.

The spelling of 275145 in words is "two hundred seventy-five thousand, one hundred forty-five".