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50507 = 172971

50507 has 4 divisors (see below), whose sum is σ = 53496. Its totient is φ = 47520.

The previous prime is 50503. The next prime is 50513. The reversal of 50507 is 70505.

50507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50507 - 22 = 50503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2971 = 50507 / (5 + 0 + 5 + 0 + 7).

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 50507.

It is not an unprimeable number, because it can be changed into a prime (50503) 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, 1469 + ... + 1502.

It is an arithmetic number, because the mean of its divisors is an integer number (13374).

250507 is an apocalyptic number.

50507 is a deficient number, since it is larger than the sum of its proper divisors (2989).

50507 is a wasteful number, since it uses less digits than its factorization.

50507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988.

The product of its (nonzero) digits is 175, while the sum is 17.

The square root of 50507 is about 224.7376247983. The cubic root of 50507 is about 36.9644167276.

The spelling of 50507 in words is "fifty thousand, five hundred seven".

Divisors: 1 17 2971 50507