1155545 has 4 divisors (see below), whose sum is σ = 1386660. Its totient is φ = 924432.

The previous prime is 1155529. The next prime is 1155569. The reversal of 1155545 is 5455511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 652864 + 502681 = 808^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155545 - 2⁴ = 1155529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115550 + ... + 115559.

It is an arithmetic number, because the mean of its divisors is an integer number (346665).

2^1155545 is an apocalyptic number.

It is an amenable number.

1155545 is a deficient number, since it is larger than the sum of its proper divisors (231115).

1155545 is an equidigital number, since it uses as much as digits as its factorization.

1155545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231114.

The product of its digits is 2500, while the sum is 26.

The square root of 1155545 is about 1074.9627900537. The cubic root of 1155545 is about 104.9370749202.

The spelling of 1155545 in words is "one million, one hundred fifty-five thousand, five hundred forty-five".