275551 has 4 divisors (see below), whose sum is σ = 279504. Its totient is φ = 271600.

The previous prime is 275549. The next prime is 275573. The reversal of 275551 is 155572.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 275551 - 2¹ = 275549 is a prime.

It is a Duffinian number.

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 (275521) 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, 1870 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (69876).

2²⁷⁵⁵⁵¹ is an apocalyptic number.

275551 is a deficient number, since it is larger than the sum of its proper divisors (3953).

275551 is an equidigital number, since it uses as much as digits as its factorization.

275551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952.

The product of its digits is 1750, while the sum is 25.

The square root of 275551 is about 524.9295190785. The cubic root of 275551 is about 65.0729752395.

It can be divided in two parts, 27555 and 1, that added together give a square (27556 = 166²).

The spelling of 275551 in words is "two hundred seventy-five thousand, five hundred fifty-one".