5531898240 has 640 divisors, whose sum is σ = 21993444000. Its totient is φ = 1313832960.

The previous prime is 5531898223. The next prime is 5531898247. The reversal of 5531898240 is 428981355.

5531898240 is a `hidden beast` number, since 5 + 5 + 318 + 98 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531898247) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 50751306 + ... + 50751414.

Almost surely, 2^5531898240 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 5531898240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10996722000).

5531898240 is an abundant number, since it is smaller than the sum of its proper divisors (16461545760).

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

5531898240 is a wasteful number, since it uses less digits than its factorization.

5531898240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 5531898240 is about 74376.7318453829. The cubic root of 5531898240 is about 1768.5800735088.

The spelling of 5531898240 in words is "five billion, five hundred thirty-one million, eight hundred ninety-eight thousand, two hundred forty".