275121 has 24 divisors (see below), whose sum is σ = 496704. Its totient is φ = 142560.

The previous prime is 275087. The next prime is 275129. The reversal of 275121 is 121572.

It is not a de Polignac number, because 275121 - 2⁷ = 274993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275094 and 275103.

It is not an unprimeable number, because it can be changed into a prime (275129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (20696).

2²⁷⁵¹²¹ is an apocalyptic number.

275121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

275121 is a deficient number, since it is larger than the sum of its proper divisors (221583).

275121 is a wasteful number, since it uses less digits than its factorization.

275121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 418 counting only the distinct ones).

The product of its digits is 140, while the sum is 18.

The square root of 275121 is about 524.5197803706. The cubic root of 275121 is about 65.0391086147.

Adding to 275121 its reverse (121572), we get a palindrome (396693).

It can be divided in two parts, 2751 and 21, that added together give a palindrome (2772).

The spelling of 275121 in words is "two hundred seventy-five thousand, one hundred twenty-one".