109981553 has 4 divisors (see below), whose sum is σ = 119979888. Its totient is φ = 99983220.

The previous prime is 109981541. The next prime is 109981577. The reversal of 109981553 is 355189901.

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 not a de Polignac number, because 109981553 - 2⁶ = 109981489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109981553.

It is not an unprimeable number, because it can be changed into a prime (109983553) 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, 4999151 + ... + 4999172.

It is an arithmetic number, because the mean of its divisors is an integer number (29994972).

Almost surely, 2^109981553 is an apocalyptic number.

It is an amenable number.

109981553 is a deficient number, since it is larger than the sum of its proper divisors (9998335).

109981553 is an equidigital number, since it uses as much as digits as its factorization.

109981553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998334.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 109981553 is about 10487.2090186093. The cubic root of 109981553 is about 479.1152001719.

The spelling of 109981553 in words is "one hundred nine million, nine hundred eighty-one thousand, five hundred fifty-three".