111145856 has 16 divisors (see below), whose sum is σ = 221423640. Its totient is φ = 55572864.

The previous prime is 111145829. The next prime is 111145889. The reversal of 111145856 is 658541111.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434036 + ... + 434291.

Almost surely, 2^111145856 is an apocalyptic number.

111145856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111145856 is a deficient number, since it is larger than the sum of its proper divisors (110277784).

111145856 is an frugal number, since it uses more digits than its factorization.

111145856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868341 (or 868329 counting only the distinct ones).

The product of its digits is 4800, while the sum is 32.

The square root of 111145856 is about 10542.5734998624. The cubic root of 111145856 is about 480.7999623478.

Adding to 111145856 its reverse (658541111), we get a palindrome (769686967).

The spelling of 111145856 in words is "one hundred eleven million, one hundred forty-five thousand, eight hundred fifty-six".