1181056 has 16 divisors (see below), whose sum is σ = 2353140. Its totient is φ = 590464.

The previous prime is 1181053. The next prime is 1181057. The reversal of 1181056 is 6501811.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4486 + ... + 4741.

2^1181056 is an apocalyptic number.

1181056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1181056 is a deficient number, since it is larger than the sum of its proper divisors (1172084).

1181056 is an frugal number, since it uses more digits than its factorization.

1181056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9241 (or 9229 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1181056 is about 1086.7640038205. The cubic root of 1181056 is about 105.7036936760.

Adding to 1181056 its reverse (6501811), we get a palindrome (7682867).

The spelling of 1181056 in words is "one million, one hundred eighty-one thousand, fifty-six".