110020561 has 16 divisors (see below), whose sum is σ = 129222144. Its totient is φ = 91715904.

The previous prime is 110020517. The next prime is 110020607. The reversal of 110020561 is 165020011.

It is a happy number.

It is not a de Polignac number, because 110020561 - 2⁹ = 110020049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110080561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55951 + ... + 57883.

It is an arithmetic number, because the mean of its divisors is an integer number (8076384).

Almost surely, 2^110020561 is an apocalyptic number.

It is an amenable number.

110020561 is a deficient number, since it is larger than the sum of its proper divisors (19201583).

110020561 is a wasteful number, since it uses less digits than its factorization.

110020561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 110020561 is about 10489.0686431160. The cubic root of 110020561 is about 479.1718372960.

Adding to 110020561 its reverse (165020011), we get a palindrome (275040572).

The spelling of 110020561 in words is "one hundred ten million, twenty thousand, five hundred sixty-one".