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520029 = 3257781
BaseRepresentation
bin1111110111101011101
3222102100100
41332331131
5113120104
615051313
74264056
oct1767535
9872310
10520029
11325784
12210b39
13152913
14d772d
15a4139
hex7ef5d

520029 has 6 divisors (see below), whose sum is σ = 751166. Its totient is φ = 346680.

The previous prime is 520021. The next prime is 520031. The reversal of 520029 is 920025.

It can be written as a sum of positive squares in only one way, i.e., 492804 + 27225 = 702^2 + 165^2 .

It is not a de Polignac number, because 520029 - 23 = 520021 is a prime.

It is a super-5 number, since 5×5200295 (a number of 30 digits) contains 55555 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 519993 and 520020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520021) 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, 28882 + ... + 28899.

2520029 is an apocalyptic number.

It is an amenable number.

520029 is a deficient number, since it is larger than the sum of its proper divisors (231137).

520029 is a wasteful number, since it uses less digits than its factorization.

520029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57787 (or 57784 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 520029 is about 721.1303626946. The cubic root of 520029 is about 80.4160100292.

The spelling of 520029 in words is "five hundred twenty thousand, twenty-nine".

Divisors: 1 3 9 57781 173343 520029