111371445 has 24 divisors (see below), whose sum is σ = 203205600. Its totient is φ = 56271456.

The previous prime is 111371441. The next prime is 111371453. The reversal of 111371445 is 544173111.

It is not a de Polignac number, because 111371445 - 2² = 111371441 is a prime.

It is a super-2 number, since 2×111371445² = 24807197522776050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111371441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64275 + ... + 65984.

It is an arithmetic number, because the mean of its divisors is an integer number (8466900).

Almost surely, 2^111371445 is an apocalyptic number.

111371445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111371445 is a deficient number, since it is larger than the sum of its proper divisors (91834155).

111371445 is a wasteful number, since it uses less digits than its factorization.

111371445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130289 (or 130286 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 111371445 is about 10553.2670296927. The cubic root of 111371445 is about 481.1250303497.

The spelling of 111371445 in words is "one hundred eleven million, three hundred seventy-one thousand, four hundred forty-five".