50000181 has 16 divisors (see below), whose sum is σ = 83117568. Its totient is φ = 25974000.

The previous prime is 50000161. The next prime is 50000201. The reversal of 50000181 is 18100005.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (50000161) and next prime (50000201).

It is not a de Polignac number, because 50000181 - 2¹⁵ = 49967413 is a prime.

It is a super-2 number, since 2×50000181² = 5000036200065522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50000181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50000101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107995 + ... + 108456.

It is an arithmetic number, because the mean of its divisors is an integer number (5194848).

Almost surely, 2^50000181 is an apocalyptic number.

It is an amenable number.

50000181 is a deficient number, since it is larger than the sum of its proper divisors (33117387).

50000181 is a wasteful number, since it uses less digits than its factorization.

50000181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216472.

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

The square root of 50000181 is about 7071.0806104866. The cubic root of 50000181 is about 368.4035944033.

Adding to 50000181 its reverse (18100005), we get a palindrome (68100186).

The spelling of 50000181 in words is "fifty million, one hundred eighty-one", and thus it is an aban number.