528531061 has 4 divisors (see below), whose sum is σ = 546756300. Its totient is φ = 510305824.

The previous prime is 528531049. The next prime is 528531077. The reversal of 528531061 is 160135825.

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 110124036 + 418407025 = 10494^2 + 20455^2 .

It is a cyclic number.

It is not a de Polignac number, because 528531061 - 2¹⁵ = 528498293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528531001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9112576 + ... + 9112633.

It is an arithmetic number, because the mean of its divisors is an integer number (136689075).

Almost surely, 2^528531061 is an apocalyptic number.

It is an amenable number.

528531061 is a deficient number, since it is larger than the sum of its proper divisors (18225239).

528531061 is a wasteful number, since it uses less digits than its factorization.

528531061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18225238.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 528531061 is about 22989.8034136876. The cubic root of 528531061 is about 808.5188912254.

Adding to 528531061 its reverse (160135825), we get a palindrome (688666886).

The spelling of 528531061 in words is "five hundred twenty-eight million, five hundred thirty-one thousand, sixty-one".