4521443145 has 32 divisors (see below), whose sum is σ = 7305704064. Its totient is φ = 2387750400.

The previous prime is 4521443117. The next prime is 4521443149. The reversal of 4521443145 is 5413441254.

It is a happy number.

It is not a de Polignac number, because 4521443145 - 2⁹ = 4521442633 is a prime.

It is a super-2 number, since 2×4521443145² = 40886896226934982050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4521443149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 683755 + ... + 690335.

It is an arithmetic number, because the mean of its divisors is an integer number (228303252).

Almost surely, 2^4521443145 is an apocalyptic number.

It is an amenable number.

4521443145 is a deficient number, since it is larger than the sum of its proper divisors (2784260919).

4521443145 is a wasteful number, since it uses less digits than its factorization.

4521443145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033.

The product of its digits is 38400, while the sum is 33.

The square root of 4521443145 is about 67241.6771429744. The cubic root of 4521443145 is about 1653.5818295692.

Adding to 4521443145 its reverse (5413441254), we get a palindrome (9934884399).

The spelling of 4521443145 in words is "four billion, five hundred twenty-one million, four hundred forty-three thousand, one hundred forty-five".