1104611561 has 8 divisors (see below), whose sum is σ = 1140655104. Its totient is φ = 1068593760.

The previous prime is 1104611549. The next prime is 1104611581. The reversal of 1104611561 is 1651164011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1104611561 - 2¹⁰ = 1104610537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1104611561.

It is not an unprimeable number, because it can be changed into a prime (1104611581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121376 + ... + 130158.

It is an arithmetic number, because the mean of its divisors is an integer number (142581888).

Almost surely, 2^1104611561 is an apocalyptic number.

It is an amenable number.

1104611561 is a deficient number, since it is larger than the sum of its proper divisors (36043543).

1104611561 is an equidigital number, since it uses as much as digits as its factorization.

1104611561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1104611561 is about 33235.6970891239. The cubic root of 1104611561 is about 1033.7206565940.

Adding to 1104611561 its reverse (1651164011), we get a palindrome (2755775572).

The spelling of 1104611561 in words is "one billion, one hundred four million, six hundred eleven thousand, five hundred sixty-one".