6528453121 has 4 divisors (see below), whose sum is σ = 6540521044. Its totient is φ = 6516385200.

The previous prime is 6528453109. The next prime is 6528453131. The reversal of 6528453121 is 1213548256.

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

It can be written as a sum of positive squares in 2 ways, for example, as 897601600 + 5630851521 = 29960^2 + 75039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6528453121 - 2⁵ = 6528453089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6528453131) 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, 6033150 + ... + 6034231.

It is an arithmetic number, because the mean of its divisors is an integer number (1635130261).

Almost surely, 2^6528453121 is an apocalyptic number.

It is an amenable number.

6528453121 is a deficient number, since it is larger than the sum of its proper divisors (12067923).

6528453121 is a wasteful number, since it uses less digits than its factorization.

6528453121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067922.

The product of its digits is 57600, while the sum is 37.

The square root of 6528453121 is about 80798.8435622689. The cubic root of 6528453121 is about 1868.9747323814.

The spelling of 6528453121 in words is "six billion, five hundred twenty-eight million, four hundred fifty-three thousand, one hundred twenty-one".