48643181 has 4 divisors (see below), whose sum is σ = 48661632. Its totient is φ = 48624732.

The previous prime is 48643099. The next prime is 48643193. The reversal of 48643181 is 18134684.

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 48643181 - 2¹⁰ = 48642157 is a prime.

It is a super-2 number, since 2×48643181² = 4732318115597522, 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 (48643481) 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, 4445 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (12165408).

Almost surely, 2^48643181 is an apocalyptic number.

It is an amenable number.

48643181 is a deficient number, since it is larger than the sum of its proper divisors (18451).

48643181 is a wasteful number, since it uses less digits than its factorization.

48643181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450.

The product of its digits is 18432, while the sum is 35.

The square root of 48643181 is about 6974.4663595145. The cubic root of 48643181 is about 365.0401682196.

The spelling of 48643181 in words is "forty-eight million, six hundred forty-three thousand, one hundred eighty-one".