1171055 has 4 divisors (see below), whose sum is σ = 1405272. Its totient is φ = 936840.

The previous prime is 1171039. The next prime is 1171057. The reversal of 1171055 is 5501711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5501711 = 1559 ⋅3529.

It is not a de Polignac number, because 1171055 - 2⁴ = 1171039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171057) 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, 117101 + ... + 117110.

It is an arithmetic number, because the mean of its divisors is an integer number (351318).

2^1171055 is an apocalyptic number.

1171055 is a deficient number, since it is larger than the sum of its proper divisors (234217).

1171055 is an equidigital number, since it uses as much as digits as its factorization.

1171055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234216.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 1171055 is about 1082.1529466762. The cubic root of 1171055 is about 105.4044866769.

Adding to 1171055 its reverse (5501711), we get a palindrome (6672766).

The spelling of 1171055 in words is "one million, one hundred seventy-one thousand, fifty-five".