45111121 has 4 divisors (see below), whose sum is σ = 49212144. Its totient is φ = 41010100.

The previous prime is 45111089. The next prime is 45111127. The reversal of 45111121 is 12111154.

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 a cyclic number.

It is not a de Polignac number, because 45111121 - 2⁵ = 45111089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45111095 and 45111104.

It is not an unprimeable number, because it can be changed into a prime (45111127) 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, 2050495 + ... + 2050516.

It is an arithmetic number, because the mean of its divisors is an integer number (12303036).

Almost surely, 2^45111121 is an apocalyptic number.

It is an amenable number.

45111121 is a deficient number, since it is larger than the sum of its proper divisors (4101023).

45111121 is a wasteful number, since it uses less digits than its factorization.

45111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101022.

The product of its digits is 40, while the sum is 16.

The square root of 45111121 is about 6716.4812960359. The cubic root of 45111121 is about 355.9818642657.

Adding to 45111121 its reverse (12111154), we get a palindrome (57222275).

The spelling of 45111121 in words is "forty-five million, one hundred eleven thousand, one hundred twenty-one".