6521526485 has 16 divisors (see below), whose sum is σ = 8288815536. Its totient is φ = 4908761088.

The previous prime is 6521526481. The next prime is 6521526499. The reversal of 6521526485 is 5846251256.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 440958001 + 6080568484 = 20999^2 + 77978^2 .

It is a cyclic number.

It is not a de Polignac number, because 6521526485 - 2² = 6521526481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521526481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303869 + ... + 324621.

It is an arithmetic number, because the mean of its divisors is an integer number (518050971).

Almost surely, 2^6521526485 is an apocalyptic number.

It is an amenable number.

6521526485 is a deficient number, since it is larger than the sum of its proper divisors (1767289051).

6521526485 is a wasteful number, since it uses less digits than its factorization.

6521526485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24472.

The product of its digits is 576000, while the sum is 44.

The square root of 6521526485 is about 80755.9687267759. The cubic root of 6521526485 is about 1868.3135094467.

The spelling of 6521526485 in words is "six billion, five hundred twenty-one million, five hundred twenty-six thousand, four hundred eighty-five".