7528512289 has 3 divisors (see below), whose sum is σ = 7528599057. Its totient is φ = 7528425522.

The previous prime is 7528512281. The next prime is 7528512337. The reversal of 7528512289 is 9822158257.

The square root of 7528512289 is 86767.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9822158257 = 23 ⋅427050359.

It is not a de Polignac number, because 7528512289 - 2³ = 7528512281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7528512281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 43384 + ... + 130150.

It is an arithmetic number, because the mean of its divisors is an integer number (2509533019).

Almost surely, 2^7528512289 is an apocalyptic number.

7528512289 is the 86767-th square number.

7528512289 is the 43384-th centered octagonal number.

It is an amenable number.

7528512289 is a deficient number, since it is larger than the sum of its proper divisors (86768).

7528512289 is an frugal number, since it uses more digits than its factorization.

7528512289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173534 (or 86767 counting only the distinct ones).

The product of its digits is 806400, while the sum is 49.

The cubic root of 7528512289 is about 1959.9111691832.

Multiplying 7528512289 by its sum of digits (49), we get a square (368897102161 = 607369²).

The spelling of 7528512289 in words is "seven billion, five hundred twenty-eight million, five hundred twelve thousand, two hundred eighty-nine".