45440121 has 8 divisors (see below), whose sum is σ = 61996000. Its totient is φ = 29588832.

The previous prime is 45440119. The next prime is 45440159. The reversal of 45440121 is 12104454.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45440121 - 2¹ = 45440119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45440321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175996 + ... + 176253.

It is an arithmetic number, because the mean of its divisors is an integer number (7749500).

Almost surely, 2^45440121 is an apocalyptic number.

It is an amenable number.

45440121 is a deficient number, since it is larger than the sum of its proper divisors (16555879).

45440121 is a wasteful number, since it uses less digits than its factorization.

45440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352295.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 45440121 is about 6740.9287935714. The cubic root of 45440121 is about 356.8451729197.

Adding to 45440121 its reverse (12104454), we get a palindrome (57544575).

The spelling of 45440121 in words is "forty-five million, four hundred forty thousand, one hundred twenty-one".