48118181 has 4 divisors (see below), whose sum is σ = 48367692. Its totient is φ = 47868672.

The previous prime is 48118157. The next prime is 48118193. The reversal of 48118181 is 18181184.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23367556 + 24750625 = 4834^2 + 4975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48118181 is a prime.

It is a super-2 number, since 2×48118181² = 4630718685497522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48118121) 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, 124466 + ... + 124851.

It is an arithmetic number, because the mean of its divisors is an integer number (12091923).

Almost surely, 2^48118181 is an apocalyptic number.

It is an amenable number.

48118181 is a deficient number, since it is larger than the sum of its proper divisors (249511).

48118181 is a wasteful number, since it uses less digits than its factorization.

48118181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249510.

The product of its digits is 2048, while the sum is 32.

The square root of 48118181 is about 6936.7269659401. The cubic root of 48118181 is about 363.7221367950.

The spelling of 48118181 in words is "forty-eight million, one hundred eighteen thousand, one hundred eighty-one".