45143121 has 16 divisors (see below), whose sum is σ = 61979904. Its totient is φ = 29213184.

The previous prime is 45143117. The next prime is 45143123. The reversal of 45143121 is 12134154.

It is not a de Polignac number, because 45143121 - 2² = 45143117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45143123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13960 + ... + 16886.

It is an arithmetic number, because the mean of its divisors is an integer number (3873744).

Almost surely, 2^45143121 is an apocalyptic number.

It is an amenable number.

45143121 is a deficient number, since it is larger than the sum of its proper divisors (16836783).

45143121 is a wasteful number, since it uses less digits than its factorization.

45143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080.

The product of its digits is 480, while the sum is 21.

The square root of 45143121 is about 6718.8630734671. The cubic root of 45143121 is about 356.0660174038.

Adding to 45143121 its reverse (12134154), we get a palindrome (57277275).

The spelling of 45143121 in words is "forty-five million, one hundred forty-three thousand, one hundred twenty-one".