4531145540 has 24 divisors (see below), whose sum is σ = 9518570712. Its totient is φ = 1811855360.

The previous prime is 4531145533. The next prime is 4531145569. The reversal of 4531145540 is 455411354.

It can be written as a sum of positive squares in 4 ways, for example, as 1220524096 + 3310621444 = 34936^2 + 57538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4531145497 and 4531145506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26630 + ... + 98850.

It is an arithmetic number, because the mean of its divisors is an integer number (396607113).

Almost surely, 2^4531145540 is an apocalyptic number.

It is an amenable number.

4531145540 is an abundant number, since it is smaller than the sum of its proper divisors (4987425172).

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

4531145540 is a wasteful number, since it uses less digits than its factorization.

4531145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75367 (or 75365 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 4531145540 is about 67313.7841753084. The cubic root of 4531145540 is about 1654.7637709216.

Adding to 4531145540 its reverse (455411354), we get a palindrome (4986556894).

The spelling of 4531145540 in words is "four billion, five hundred thirty-one million, one hundred forty-five thousand, five hundred forty".