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520536231 = 3257837359
BaseRepresentation
bin11111000001101…
…100000010100111
31100021110222110200
4133001230002213
52031224124411
6123352521543
715620325225
oct3701540247
91307428420
10520536231
11247913636
121263b02b3
1383ac5607
144d1bdb15
1530a72e56
hex1f06c0a7

520536231 has 6 divisors (see below), whose sum is σ = 751885680. Its totient is φ = 347024148.

The previous prime is 520536193. The next prime is 520536257. The reversal of 520536231 is 132635025.

520536231 is a `hidden beast` number, since 520 + 53 + 62 + 31 = 666.

It is not a de Polignac number, because 520536231 - 226 = 453427367 is a prime.

It is a super-2 number, since 2×5205362312 = 541915935567370722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520536195 and 520536204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520536131) 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, 28918671 + ... + 28918688.

It is an arithmetic number, because the mean of its divisors is an integer number (125314280).

Almost surely, 2520536231 is an apocalyptic number.

520536231 is a deficient number, since it is larger than the sum of its proper divisors (231349449).

520536231 is a wasteful number, since it uses less digits than its factorization.

520536231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57837365 (or 57837362 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 520536231 is about 22815.2631148536. The cubic root of 520536231 is about 804.4214718597.

The spelling of 520536231 in words is "five hundred twenty million, five hundred thirty-six thousand, two hundred thirty-one".

Divisors: 1 3 9 57837359 173512077 520536231