45521121 has 16 divisors (see below), whose sum is σ = 65150784. Its totient is φ = 28168704.

The previous prime is 45521107. The next prime is 45521129. The reversal of 45521121 is 12112554.

45521121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45521121 - 2⁵ = 45521089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45521129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2391 + ... + 9836.

It is an arithmetic number, because the mean of its divisors is an integer number (4071924).

Almost surely, 2^45521121 is an apocalyptic number.

It is an amenable number.

45521121 is a deficient number, since it is larger than the sum of its proper divisors (19629663).

45521121 is a wasteful number, since it uses less digits than its factorization.

45521121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320.

The product of its digits is 400, while the sum is 21.

The square root of 45521121 is about 6746.9341926537. The cubic root of 45521121 is about 357.0570803755.

Adding to 45521121 its reverse (12112554), we get a palindrome (57633675).

The spelling of 45521121 in words is "forty-five million, five hundred twenty-one thousand, one hundred twenty-one".