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528529 = 7272
BaseRepresentation
bin10000001000010010001
3222212000011
42001002101
5113403104
615154521
74330621
oct2010221
9885004
10528529
11331101
12215a41
13156751
14da881
15a6904
hex81091

528529 has 3 divisors (see below), whose sum is σ = 529257. Its totient is φ = 527802.

The previous prime is 528527. The next prime is 528559. The reversal of 528529 is 925825.

It is a happy number.

The square root of 528529 is 727.

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 528529 - 21 = 528527 is a prime.

It is a Duffinian number.

528529 is a lucky number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 528529.

It is not an unprimeable number, because it can be changed into a prime (528527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 364 + ... + 1090.

It is an arithmetic number, because the mean of its divisors is an integer number (176419).

2528529 is an apocalyptic number.

528529 is the 727-th square number.

528529 is the 364-th centered octagonal number.

It is an amenable number.

528529 is a deficient number, since it is larger than the sum of its proper divisors (728).

528529 is an frugal number, since it uses more digits than its factorization.

528529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 727 counting only the distinct ones).

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

The cubic root of 528529 is about 80.8517840288.

The spelling of 528529 in words is "five hundred twenty-eight thousand, five hundred twenty-nine".

Divisors: 1 727 528529