45020145 has 16 divisors (see below), whose sum is σ = 72410112. Its totient is φ = 23884800.

The previous prime is 45020123. The next prime is 45020149. The reversal of 45020145 is 54102054.

It is not a de Polignac number, because 45020145 - 2⁶ = 45020081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45020149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4881 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (4525632).

Almost surely, 2^45020145 is an apocalyptic number.

It is an amenable number.

45020145 is a deficient number, since it is larger than the sum of its proper divisors (27389967).

45020145 is a wasteful number, since it uses less digits than its factorization.

45020145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45020145 is about 6709.7052841388. The cubic root of 45020145 is about 355.7423992831.

Adding to 45020145 its reverse (54102054), we get a palindrome (99122199).

The spelling of 45020145 in words is "forty-five million, twenty thousand, one hundred forty-five".