5531021442 has 128 divisors (see below), whose sum is σ = 13031020800. Its totient is φ = 1736640000.

The previous prime is 5531021407. The next prime is 5531021449. The reversal of 5531021442 is 2441201355.

5531021442 is a `hidden beast` number, since 553 + 102 + 1 + 4 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5531021449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20561284 + ... + 20561552.

It is an arithmetic number, because the mean of its divisors is an integer number (101804850).

Almost surely, 2^5531021442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5531021442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6515510400).

5531021442 is an abundant number, since it is smaller than the sum of its proper divisors (7499999358).

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

5531021442 is a wasteful number, since it uses less digits than its factorization.

5531021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 5531021442 is about 74370.8373087193. The cubic root of 5531021442 is about 1768.4866294300.

Adding to 5531021442 its reverse (2441201355), we get a palindrome (7972222797).

The spelling of 5531021442 in words is "five billion, five hundred thirty-one million, twenty-one thousand, four hundred forty-two".