5531264642 has 4 divisors (see below), whose sum is σ = 8296896966. Its totient is φ = 2765632320.

The previous prime is 5531264633. The next prime is 5531264681. The reversal of 5531264642 is 2464621355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5169466201 + 361798441 = 71899^2 + 19021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5531264596 and 5531264605.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1382816159 + ... + 1382816162.

Almost surely, 2^5531264642 is an apocalyptic number.

5531264642 is a deficient number, since it is larger than the sum of its proper divisors (2765632324).

5531264642 is a wasteful number, since it uses less digits than its factorization.

5531264642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765632323.

The product of its digits is 172800, while the sum is 38.

The square root of 5531264642 is about 74372.4723402416. The cubic root of 5531264642 is about 1768.5125492743.

Adding to 5531264642 its reverse (2464621355), we get a palindrome (7995885997).

The spelling of 5531264642 in words is "five billion, five hundred thirty-one million, two hundred sixty-four thousand, six hundred forty-two".