1104561 has 24 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 686880.

The previous prime is 1104559. The next prime is 1104589. The reversal of 1104561 is 1654011.

1104561 is a `hidden beast` number, since 1 + 104 + 561 = 666.

It is not a de Polignac number, because 1104561 - 2¹ = 1104559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1104511) 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, 10270 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (71136).

2^1104561 is an apocalyptic number.

It is an amenable number.

1104561 is a deficient number, since it is larger than the sum of its proper divisors (602703).

1104561 is a wasteful number, since it uses less digits than its factorization.

1104561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1104561 is about 1050.9809703320. The cubic root of 1104561 is about 103.3704884308.

Adding to 1104561 its reverse (1654011), we get a palindrome (2758572).

The spelling of 1104561 in words is "one million, one hundred four thousand, five hundred sixty-one".