6530521067 has 4 divisors (see below), whose sum is σ = 7463452656. Its totient is φ = 5597589480.

The previous prime is 6530521057. The next prime is 6530521093. The reversal of 6530521067 is 7601250356.

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

It is a de Polignac number, because none of the positive numbers 2^k-6530521067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6530521057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466465784 + ... + 466465797.

It is an arithmetic number, because the mean of its divisors is an integer number (1865863164).

Almost surely, 2^6530521067 is an apocalyptic number.

6530521067 is a deficient number, since it is larger than the sum of its proper divisors (932931589).

6530521067 is an equidigital number, since it uses as much as digits as its factorization.

6530521067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932931588.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 6530521067 is about 80811.6394277458. The cubic root of 6530521067 is about 1869.1720497110.

The spelling of 6530521067 in words is "six billion, five hundred thirty million, five hundred twenty-one thousand, sixty-seven".