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50181 = 343389

50181 has 8 divisors (see below), whose sum is σ = 68640. Its totient is φ = 32592.

The previous prime is 50177. The next prime is 50207. The reversal of 50181 is 18105.

Adding to 50181 its reverse (18105), we get a palindrome (68286).

It can be divided in two parts, 50 and 181, that added together give a triangular number (231 = T21).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50181 - 22 = 50177 is a prime.

It is a super-2 number, since 2×501812 = 5036265522, which contains 22 as substring.

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

It is a Curzon number.

50181 is a lucky number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 50181.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 50181.

It is not an unprimeable number, because it can be changed into a prime (50101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 323.

It is an arithmetic number, because the mean of its divisors is an integer number (8580).

250181 is an apocalyptic number.

It is an amenable number.

50181 is a deficient number, since it is larger than the sum of its proper divisors (18459).

50181 is a wasteful number, since it uses less digits than its factorization.

50181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 50181 is about 224.0111604363. The cubic root of 50181 is about 36.8847154330.

The spelling of 50181 in words is "fifty thousand, one hundred eighty-one".

Divisors: 1 3 43 129 389 1167 16727 50181