1105610561 has 8 divisors (see below), whose sum is σ = 1207397664. Its totient is φ = 1004036320.

The previous prime is 1105610557. The next prime is 1105610593. The reversal of 1105610561 is 1650165011.

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 1105610561 - 2² = 1105610557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1105610561.

It is not an unprimeable number, because it can be changed into a prime (1105610501) 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 7 ways as a sum of consecutive naturals, for example, 42251 + ... + 63216.

It is an arithmetic number, because the mean of its divisors is an integer number (150924708).

Almost surely, 2^1105610561 is an apocalyptic number.

1105610561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1105610561 is a deficient number, since it is larger than the sum of its proper divisors (101787103).

1105610561 is a wasteful number, since it uses less digits than its factorization.

1105610561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106431.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1105610561 is about 33250.7227139501. The cubic root of 1105610561 is about 1034.0321916806.

Adding to 1105610561 its reverse (1650165011), we get a palindrome (2755775572).

The spelling of 1105610561 in words is "one billion, one hundred five million, six hundred ten thousand, five hundred sixty-one".