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520182057 = 31979331349
BaseRepresentation
bin11111000000010…
…101100100101001
31100020210222122010
4133000111210221
52031131311212
6123341150133
715614321523
oct3700254451
91306728563
10520182057
112476a152a
1212625b349
1383a00345
144d12aa13
1530a0303c
hex1f015929

520182057 has 32 divisors (see below), whose sum is σ = 743680000. Its totient is φ = 322470720.

The previous prime is 520182043. The next prime is 520182083. The reversal of 520182057 is 750281025.

It is not a de Polignac number, because 520182057 - 26 = 520181993 is a prime.

It is the 22808-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520182097) by changing a digit.

It is a nontrivial repunit in base 22807.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1490319 + ... + 1490667.

It is an arithmetic number, because the mean of its divisors is an integer number (23240000).

Almost surely, 2520182057 is an apocalyptic number.

520182057 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

520182057 is a deficient number, since it is larger than the sum of its proper divisors (223497943).

520182057 is a wasteful number, since it uses less digits than its factorization.

520182057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 520182057 is about 22807.5000164420. The cubic root of 520182057 is about 804.2389870844.

The spelling of 520182057 in words is "five hundred twenty million, one hundred eighty-two thousand, fifty-seven".

Divisors: 1 3 19 57 79 237 331 349 993 1047 1501 4503 6289 6631 18867 19893 26149 27571 78447 82713 115519 346557 496831 523849 1490493 1571547 2194861 6584583 9126001 27378003 173394019 520182057