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530525 = 5221221
BaseRepresentation
bin10000001100001011101
3222221202002
42001201131
5113434100
615212045
74336502
oct2014135
9887662
10530525
11332656
12217025
13157628
14db4a9
15a72d5
hex8185d

530525 has 6 divisors (see below), whose sum is σ = 657882. Its totient is φ = 424400.

The previous prime is 530513. The next prime is 530527. The reversal of 530525 is 525035.

It can be written as a sum of positive squares in 3 ways, for example, as 143641 + 386884 = 379^2 + 622^2 .

It is not a de Polignac number, because 530525 - 212 = 526429 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 530497 and 530506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10586 + ... + 10635.

It is an arithmetic number, because the mean of its divisors is an integer number (109647).

2530525 is an apocalyptic number.

It is an amenable number.

530525 is a deficient number, since it is larger than the sum of its proper divisors (127357).

530525 is a wasteful number, since it uses less digits than its factorization.

530525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21231 (or 21226 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 530525 is about 728.3714711601. The cubic root of 530525 is about 80.9534356154.

The spelling of 530525 in words is "five hundred thirty thousand, five hundred twenty-five".

Divisors: 1 5 25 21221 106105 530525