111513045 has 32 divisors (see below), whose sum is σ = 210493440. Its totient is φ = 49331520.

The previous prime is 111513041. The next prime is 111513049. The reversal of 111513045 is 540315111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111513041) and next prime (111513049).

It is not a de Polignac number, because 111513045 - 2² = 111513041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111513041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13875 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (6577920).

Almost surely, 2^111513045 is an apocalyptic number.

111513045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111513045 is a deficient number, since it is larger than the sum of its proper divisors (98980395).

111513045 is a wasteful number, since it uses less digits than its factorization.

111513045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34305.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 111513045 is about 10559.9737215582. The cubic root of 111513045 is about 481.3288481591.

Adding to 111513045 its reverse (540315111), we get a palindrome (651828156).

It can be divided in two parts, 11151 and 3045, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 111513045 in words is "one hundred eleven million, five hundred thirteen thousand, forty-five".