4531501540 has 24 divisors (see below), whose sum is σ = 9550030392. Its totient is φ = 1806147840.

The previous prime is 4531501523. The next prime is 4531501543. The reversal of 4531501540 is 451051354.

It can be written as a sum of positive squares in 4 ways, for example, as 901921024 + 3629580516 = 30032^2 + 60246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4531501499 and 4531501508.

It is not an unprimeable number, because it can be changed into a prime (4531501543) 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, 397539 + ... + 408778.

It is an arithmetic number, because the mean of its divisors is an integer number (397917933).

Almost surely, 2^4531501540 is an apocalyptic number.

It is an amenable number.

4531501540 is an abundant number, since it is smaller than the sum of its proper divisors (5018528852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4531501540 is a wasteful number, since it uses less digits than its factorization.

4531501540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806607 (or 806605 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 4531501540 is about 67316.4284554669. The cubic root of 4531501540 is about 1654.8071065763.

Adding to 4531501540 its reverse (451051354), we get a palindrome (4982552894).

The spelling of 4531501540 in words is "four billion, five hundred thirty-one million, five hundred one thousand, five hundred forty".