111145449 has 4 divisors (see below), whose sum is σ = 148193936. Its totient is φ = 74096964.

The previous prime is 111145381. The next prime is 111145457. The reversal of 111145449 is 944541111.

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 not a de Polignac number, because 111145449 - 2⁹ = 111144937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101145449) 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, 18524239 + ... + 18524244.

It is an arithmetic number, because the mean of its divisors is an integer number (37048484).

Almost surely, 2^111145449 is an apocalyptic number.

It is an amenable number.

111145449 is a deficient number, since it is larger than the sum of its proper divisors (37048487).

111145449 is an equidigital number, since it uses as much as digits as its factorization.

111145449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37048486.

The product of its digits is 2880, while the sum is 30.

The square root of 111145449 is about 10542.5541971573. The cubic root of 111145449 is about 480.7993754739.

The spelling of 111145449 in words is "one hundred eleven million, one hundred forty-five thousand, four hundred forty-nine".