56519 has 2 divisors, whose sum is σ = 56520. Its totient is φ = 56518.
The previous prime is 56509. The next prime is 56527. The reversal of 56519 is 91565.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 56519 - 24 = 56503 is a prime.
It is a super-3 number, since 3×565193 = 541632433339077, which contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Sophie Germain prime.
It is a Chen prime.
It is a plaindrome in base 6.
It is a nialpdrome in base 16.
It is a zygodrome in base 6.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (56509) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28259 + 28260.
It is an arithmetic number, because the mean of its divisors is an integer number (28260).
256519 is an apocalyptic number.
56519 is a deficient number, since it is larger than the sum of its proper divisors (1).
56519 is an equidigital number, since it uses as much as digits as its factorization.
56519 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1350, while the sum is 26.
The square root of 56519 is about 237.7372499210. The cubic root of 56519 is about 38.3764522151.
It can be divided in two parts, 56 and 519, that added together give a palindrome (575).
The spelling of 56519 in words is "fifty-six thousand, five hundred nineteen".
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