1164555 has 24 divisors (see below), whose sum is σ = 2307552. Its totient is φ = 532224.

The previous prime is 1164533. The next prime is 1164557. The reversal of 1164555 is 5554611.

It is a happy number.

1164555 is a `hidden beast` number, since 11 + 645 + 5 + 5 = 666.

It is not a de Polignac number, because 1164555 - 2⁹ = 1164043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1164557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1534 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (96148).

2^1164555 is an apocalyptic number.

1164555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1164555 is a deficient number, since it is larger than the sum of its proper divisors (1142997).

1164555 is a wasteful number, since it uses less digits than its factorization.

1164555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715 (or 3712 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 1164555 is about 1079.1454952878. The cubic root of 1164555 is about 105.2091070971.

The spelling of 1164555 in words is "one million, one hundred sixty-four thousand, five hundred fifty-five".