4531532440 has 32 divisors (see below), whose sum is σ = 10209276000. Its totient is φ = 1810243584.

The previous prime is 4531532407. The next prime is 4531532449. The reversal of 4531532440 is 442351354.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531532449) 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, 42900 + ... + 104419.

It is an arithmetic number, because the mean of its divisors is an integer number (319039875).

Almost surely, 2^4531532440 is an apocalyptic number.

4531532440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4531532440 is an abundant number, since it is smaller than the sum of its proper divisors (5677743560).

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

4531532440 is a wasteful number, since it uses less digits than its factorization.

4531532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148099 (or 148095 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 4531532440 is about 67316.6579681434. The cubic root of 4531532440 is about 1654.8108679066.

Adding to 4531532440 its reverse (442351354), we get a palindrome (4973883794).

The spelling of 4531532440 in words is "four billion, five hundred thirty-one million, five hundred thirty-two thousand, four hundred forty".