5531015640 has 32 divisors (see below), whose sum is σ = 16593047280. Its totient is φ = 1474937472.

The previous prime is 5531015617. The next prime is 5531015647. The reversal of 5531015640 is 465101355.

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 = 5531015598 and 5531015607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531015647) 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, 23045779 + ... + 23046018.

Almost surely, 2^5531015640 is an apocalyptic number.

It is an amenable number.

5531015640 is an abundant number, since it is smaller than the sum of its proper divisors (11062031640).

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

5531015640 is a wasteful number, since it uses less digits than its factorization.

5531015640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46091811 (or 46091807 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 5531015640 is about 74370.7983014839. The cubic root of 5531015640 is about 1768.4860110534.

Adding to 5531015640 its reverse (465101355), we get a palindrome (5996116995).

The spelling of 5531015640 in words is "five billion, five hundred thirty-one million, fifteen thousand, six hundred forty".