275385 has 16 divisors (see below), whose sum is σ = 480960. Its totient is φ = 133440.

The previous prime is 275371. The next prime is 275389. The reversal of 275385 is 583572.

It is a happy number.

It is not a de Polignac number, because 275385 - 2⁶ = 275321 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 (275389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670 + ... + 999.

It is an arithmetic number, because the mean of its divisors is an integer number (30060).

2²⁷⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

275385 is a deficient number, since it is larger than the sum of its proper divisors (205575).

275385 is a wasteful number, since it uses less digits than its factorization.

275385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688.

The product of its digits is 8400, while the sum is 30.

The square root of 275385 is about 524.7713787927. The cubic root of 275385 is about 65.0599053253.

The spelling of 275385 in words is "two hundred seventy-five thousand, three hundred eighty-five".