45545121 has 12 divisors (see below), whose sum is σ = 66307072. Its totient is φ = 30123576.

The previous prime is 45545111. The next prime is 45545153. The reversal of 45545121 is 12154554.

It is not a de Polignac number, because 45545121 - 2¹⁷ = 45414049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45545111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18781 + ... + 21066.

Almost surely, 2^45545121 is an apocalyptic number.

It is an amenable number.

45545121 is a deficient number, since it is larger than the sum of its proper divisors (20761951).

45545121 is a wasteful number, since it uses less digits than its factorization.

45545121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39980 (or 39977 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 45545121 is about 6748.7125438857. The cubic root of 45545121 is about 357.1198194892.

Adding to 45545121 its reverse (12154554), we get a palindrome (57699675).

The spelling of 45545121 in words is "forty-five million, five hundred forty-five thousand, one hundred twenty-one".