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530569 = 1340813
BaseRepresentation
bin10000001100010001001
3222221210201
42001202021
5113434234
615212201
74336564
oct2014211
9887721
10530569
11332696
12217061
13157660
14db4db
15a7314
hex81889

530569 has 4 divisors (see below), whose sum is σ = 571396. Its totient is φ = 489744.

The previous prime is 530567. The next prime is 530597. The reversal of 530569 is 965035.

It is a happy number.

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 360000 + 170569 = 600^2 + 413^2 .

It is a cyclic number.

It is not a de Polignac number, because 530569 - 21 = 530567 is a prime.

It is a super-2 number, since 2×5305692 = 563006927522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (530567) 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, 20394 + ... + 20419.

It is an arithmetic number, because the mean of its divisors is an integer number (142849).

2530569 is an apocalyptic number.

It is an amenable number.

530569 is a deficient number, since it is larger than the sum of its proper divisors (40827).

530569 is a wasteful number, since it uses less digits than its factorization.

530569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40826.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 530569 is about 728.4016749020. The cubic root of 530569 is about 80.9556735575.

The spelling of 530569 in words is "five hundred thirty thousand, five hundred sixty-nine".

Divisors: 1 13 40813 530569