45120111 has 4 divisors (see below), whose sum is σ = 60160152. Its totient is φ = 30080072.

The previous prime is 45120083. The next prime is 45120113. The reversal of 45120111 is 11102154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45120111 - 2¹¹ = 45118063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45120113) 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, 7520016 + ... + 7520021.

It is an arithmetic number, because the mean of its divisors is an integer number (15040038).

Almost surely, 2^45120111 is an apocalyptic number.

45120111 is a deficient number, since it is larger than the sum of its proper divisors (15040041).

45120111 is a wasteful number, since it uses less digits than its factorization.

45120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15040040.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 45120111 is about 6717.1505119358. The cubic root of 45120111 is about 356.0055100565.

Adding to 45120111 its reverse (11102154), we get a palindrome (56222265).

The spelling of 45120111 in words is "forty-five million, one hundred twenty thousand, one hundred eleven".