1105472561 has 4 divisors (see below), whose sum is σ = 1123595124. Its totient is φ = 1087350000.

The previous prime is 1105472551. The next prime is 1105472567. The reversal of 1105472561 is 1652745011.

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 13830961 + 1091641600 = 3719^2 + 33040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105472561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105472567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9061190 + ... + 9061311.

It is an arithmetic number, because the mean of its divisors is an integer number (280898781).

Almost surely, 2^1105472561 is an apocalyptic number.

It is an amenable number.

1105472561 is a deficient number, since it is larger than the sum of its proper divisors (18122563).

1105472561 is an equidigital number, since it uses as much as digits as its factorization.

1105472561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18122562.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1105472561 is about 33248.6475063272. The cubic root of 1105472561 is about 1033.9891679780.

The spelling of 1105472561 in words is "one billion, one hundred five million, four hundred seventy-two thousand, five hundred sixty-one".