6520530442 has 8 divisors (see below), whose sum is σ = 9797748516. Its totient is φ = 3254614272.

The previous prime is 6520530431. The next prime is 6520530469. The reversal of 6520530442 is 2440350256.

It can be written as a sum of positive squares in 2 ways, for example, as 5812385121 + 708145321 = 76239^2 + 26611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2824033 + ... + 2826340.

Almost surely, 2^6520530442 is an apocalyptic number.

6520530442 is a deficient number, since it is larger than the sum of its proper divisors (3277218074).

6520530442 is a wasteful number, since it uses less digits than its factorization.

6520530442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650952.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 6520530442 is about 80749.8014982080. The cubic root of 6520530442 is about 1868.2183877833.

Adding to 6520530442 its reverse (2440350256), we get a palindrome (8960880698).

The spelling of 6520530442 in words is "six billion, five hundred twenty million, five hundred thirty thousand, four hundred forty-two".