528520669 has 4 divisors (see below), whose sum is σ = 528579520. Its totient is φ = 528461820.

The previous prime is 528520651. The next prime is 528520693. The reversal of 528520669 is 966025825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 528520669 - 2⁵ = 528520637 is a prime.

It is a super-2 number, since 2×528520669² = 558668195120415122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528520639) 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, 12837 + ... + 34954.

It is an arithmetic number, because the mean of its divisors is an integer number (132144880).

Almost surely, 2^528520669 is an apocalyptic number.

It is an amenable number.

528520669 is a deficient number, since it is larger than the sum of its proper divisors (58851).

528520669 is a wasteful number, since it uses less digits than its factorization.

528520669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58850.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 528520669 is about 22989.5773993347. The cubic root of 528520669 is about 808.5135921465.

The spelling of 528520669 in words is "five hundred twenty-eight million, five hundred twenty thousand, six hundred sixty-nine".