1055 has 4 divisors (see below), whose sum is σ = 1272.
Its totient is φ = 840.
The previous prime is 1051. The next prime is 1061. The reversal of 1055 is 5501.
Adding to 1055 its reverse (5501), we get a palindrome (6556).
It can be divided in two parts, 105 and 5, that multiplied together give a palindrome (525).
1055 = T18 + T19 + ... +
1055 is nontrivially palindromic in base 14.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 1055 - 22 = 1051 is a prime.
It is a super-2 number, since 2×10552 = 2226050, which contains 22 as substring.
It is a Duffinian number.
1055 is a modest number, since divided by 55 gives 10 as remainder.
1055 is a nontrivial repdigit in base 14.
It is a plaindrome in base 14.
It is a nialpdrome in base 13 and base 14.
It is a zygodrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1051) 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, 101 + ... + 110.
It is an arithmetic number, because the mean of its divisors is an integer number (318).
1055 is a deficient number, since it is larger than the sum of its proper divisors (217).
1055 is an equidigital number, since it uses as much as digits as its factorization.
1055 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 216.
The product of its (nonzero) digits is 25, while the sum is 11.
The square root of 1055 is about 32.4807635378.
The cubic root of 1055 is about 10.1800713028.
The spelling of 1055 in words is "one thousand, fifty-five".