1145655 has 24 divisors (see below), whose sum is σ = 2270112. Its totient is φ = 523584.

The previous prime is 1145623. The next prime is 1145659. The reversal of 1145655 is 5565411.

It is a happy number.

1145655 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 655 = 666.

It is not a de Polignac number, because 1145655 - 2⁵ = 1145623 is a prime.

1145655 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1504 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (94588).

2^1145655 is an apocalyptic number.

1145655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145655 is a deficient number, since it is larger than the sum of its proper divisors (1124457).

1145655 is a wasteful number, since it uses less digits than its factorization.

1145655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655 (or 3652 counting only the distinct ones).

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

The square root of 1145655 is about 1070.3527455937. The cubic root of 1145655 is about 104.6368406412.

It can be divided in two parts, 11456 and 55, that added together give a palindrome (11511).

The spelling of 1145655 in words is "one million, one hundred forty-five thousand, six hundred fifty-five".