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520550223 = 3197987679
BaseRepresentation
bin11111000001101…
…111011101001111
31100021111200122220
4133001233131033
52031230101343
6123353110423
715620414064
oct3701573517
91307450586
10520550223
112479230a6
121263b8413
1383acbaab
144d1c4c6b
1530a77183
hex1f06f74f

520550223 has 8 divisors (see below), whose sum is σ = 694425600. Its totient is φ = 346854168.

The previous prime is 520550179. The next prime is 520550249. The reversal of 520550223 is 322055025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520550223 - 221 = 518453071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520550193 and 520550202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520550273) 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 7 ways as a sum of consecutive naturals, for example, 37903 + ... + 49776.

It is an arithmetic number, because the mean of its divisors is an integer number (86803200).

Almost surely, 2520550223 is an apocalyptic number.

520550223 is a deficient number, since it is larger than the sum of its proper divisors (173875377).

520550223 is a wasteful number, since it uses less digits than its factorization.

520550223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89661.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 520550223 is about 22815.5697496249. The cubic root of 520550223 is about 804.4286794044.

It can be divided in two parts, 52055022 and 3, that added together give a palindrome (52055025).

The spelling of 520550223 in words is "five hundred twenty million, five hundred fifty thousand, two hundred twenty-three".

Divisors: 1 3 1979 5937 87679 263037 173516741 520550223