48539981 has 8 divisors (see below), whose sum is σ = 58737600. Its totient is φ = 39158208.

The previous prime is 48539951. The next prime is 48539987. The reversal of 48539981 is 18993584.

48539981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-48539981 is a prime.

It is a super-2 number, since 2×48539981² = 4712259510960722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48539987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203831 + ... + 204068.

It is an arithmetic number, because the mean of its divisors is an integer number (7342200).

Almost surely, 2^48539981 is an apocalyptic number.

It is an amenable number.

48539981 is a deficient number, since it is larger than the sum of its proper divisors (10197619).

48539981 is a wasteful number, since it uses less digits than its factorization.

48539981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407923.

The product of its digits is 311040, while the sum is 47.

The square root of 48539981 is about 6967.0640157817. The cubic root of 48539981 is about 364.7818324679.

The spelling of 48539981 in words is "forty-eight million, five hundred thirty-nine thousand, nine hundred eighty-one".