47617 has 4 divisors (see below), whose sum is σ = 50436. Its totient is φ = 44800.
The previous prime is 47609. The next prime is 47623. The reversal of 47617 is 71674.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71674 = 2 ⋅35837.
It can be written as a sum of positive squares in 2 ways, for example, as 30976 + 16641 = 176^2 + 129^2 .
It is a cyclic number.
It is not a de Polignac number, because 47617 - 23 = 47609 is a prime.
It is a Duffinian number.
It is a plaindrome in base 13.
It is a junction number, because it is equal to n+sod(n) for n = 47591 and 47600.
It is not an unprimeable number, because it can be changed into a prime (47657) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384 + ... + 1417.
It is an arithmetic number, because the mean of its divisors is an integer number (12609).
It is a Proth number, since it is equal to 93 ⋅ 29 + 1 and 93 < 29.
247617 is an apocalyptic number.
It is an amenable number.
47617 is a deficient number, since it is larger than the sum of its proper divisors (2819).
47617 is a wasteful number, since it uses less digits than its factorization.
47617 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2818.
The product of its digits is 1176, while the sum is 25.
The square root of 47617 is about 218.2131985009. The cubic root of 47617 is about 36.2454928998.
The spelling of 47617 in words is "forty-seven thousand, six hundred seventeen".
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