528015862609 has 3 divisors (see below), whose sum is σ = 528016589257. Its totient is φ = 528015135962.

The previous prime is 528015862571. The next prime is 528015862643. The reversal of 528015862609 is 906268510825.

The square root of 528015862609 is 726647.

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.

It is not a de Polignac number, because 528015862609 - 2⁷ = 528015862481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528015862009) 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, 363324 + ... + 1089970.

Almost surely, 2^528015862609 is an apocalyptic number.

528015862609 is the 726647-th square number.

528015862609 is the 363324-th centered octagonal number.

It is an amenable number.

528015862609 is a deficient number, since it is larger than the sum of its proper divisors (726648).

528015862609 is an frugal number, since it uses more digits than its factorization.

528015862609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453294 (or 726647 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 528015862609 in words is "five hundred twenty-eight billion, fifteen million, eight hundred sixty-two thousand, six hundred nine".