528542086081 has 3 divisors (see below), whose sum is σ = 528542813091. Its totient is φ = 528541359072.

The previous prime is 528542086073. The next prime is 528542086141. The reversal of 528542086081 is 180680245825.

The square root of 528542086081 is 727009.

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 can be written as a sum of positive squares in only one way, i.e., 165656326081 + 362885760000 = 407009^2 + 602400^2 .

It is not a de Polignac number, because 528542086081 - 2³ = 528542086073 is a prime.

It is a super-2 number, since 2×528542086081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528542086781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 363505 + ... + 1090513.

It is an arithmetic number, because the mean of its divisors is an integer number (176180937697).

Almost surely, 2^528542086081 is an apocalyptic number.

528542086081 is the 727009-th square number.

528542086081 is the 363505-th centered octagonal number.

It is an amenable number.

528542086081 is a deficient number, since it is larger than the sum of its proper divisors (727010).

528542086081 is an frugal number, since it uses more digits than its factorization.

528542086081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454018 (or 727009 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

Multiplying 528542086081 by its sum of digits (49), we get a square (25898562217969 = 5089063²).

The spelling of 528542086081 in words is "five hundred twenty-eight billion, five hundred forty-two million, eighty-six thousand, eighty-one".