48181 has 4 divisors (see below), whose sum is σ = 55072. Its totient is φ = 41292.

The previous prime is 48179. The next prime is 48187. The reversal of 48181 is 18184.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48181 - 2¹ = 48179 is a prime.

It is a super-2 number, since 2×48181² = 4642817522, which contains 22 as substring.

It is the 220-th Hogben number.

It is a Duffinian number.

It is a nialpdrome in base 11 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48187) by changing a digit.

It is a nontrivial repunit in base 219.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3435 + ... + 3448.

It is an arithmetic number, because the mean of its divisors is an integer number (13768).

2⁴⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

48181 is a deficient number, since it is larger than the sum of its proper divisors (6891).

48181 is an equidigital number, since it uses as much as digits as its factorization.

48181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6890.

The product of its digits is 256, while the sum is 22.

The square root of 48181 is about 219.5017084216. The cubic root of 48181 is about 36.3880349516.

The spelling of 48181 in words is "forty-eight thousand, one hundred eighty-one".