1140555 has 16 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 561408.

The previous prime is 1140539. The next prime is 1140563. The reversal of 1140555 is 5550411.

It is not a de Polignac number, because 1140555 - 2⁴ = 1140539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2730 + ... + 3119.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

2^1140555 is an apocalyptic number.

1140555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1140555 is a deficient number, since it is larger than the sum of its proper divisors (825045).

1140555 is a wasteful number, since it uses less digits than its factorization.

1140555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1140555 is about 1067.9676961407. The cubic root of 1140555 is about 104.4813424869.

Adding to 1140555 its reverse (5550411), we get a palindrome (6690966).

The spelling of 1140555 in words is "one million, one hundred forty thousand, five hundred fifty-five".