5531125440 has 224 divisors, whose sum is σ = 18992600064. Its totient is φ = 1358479360.

The previous prime is 5531125409. The next prime is 5531125477. The reversal of 5531125440 is 445211355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5531125398 and 5531125407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763435 + ... + 770645.

Almost surely, 2^5531125440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5531125440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9496300032).

5531125440 is an abundant number, since it is smaller than the sum of its proper divisors (13461474624).

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

5531125440 is a wasteful number, since it uses less digits than its factorization.

5531125440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295 (or 7285 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 5531125440 is about 74371.5364907839. The cubic root of 5531125440 is about 1768.4977134538.

Adding to 5531125440 its reverse (445211355), we get a palindrome (5976336795).

The spelling of 5531125440 in words is "five billion, five hundred thirty-one million, one hundred twenty-five thousand, four hundred forty".