110555561 has 4 divisors (see below), whose sum is σ = 112205712. Its totient is φ = 108905412.

The previous prime is 110555551. The next prime is 110555567. The reversal of 110555561 is 165555011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110555561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (110555567) 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, 824975 + ... + 825108.

It is an arithmetic number, because the mean of its divisors is an integer number (28051428).

Almost surely, 2^110555561 is an apocalyptic number.

It is an amenable number.

110555561 is a deficient number, since it is larger than the sum of its proper divisors (1650151).

110555561 is an equidigital number, since it uses as much as digits as its factorization.

110555561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650150.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 110555561 is about 10514.5404559591. The cubic root of 110555561 is about 479.9472757482.

The spelling of 110555561 in words is "one hundred ten million, five hundred fifty-five thousand, five hundred sixty-one".