48706821 has 6 divisors (see below), whose sum is σ = 70354310. Its totient is φ = 32471208.

The previous prime is 48706817. The next prime is 48706829. The reversal of 48706821 is 12860784.

48706821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45077796 + 3629025 = 6714^2 + 1905^2 .

It is not a de Polignac number, because 48706821 - 2² = 48706817 is a prime.

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 (48706829) 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 5 ways as a sum of consecutive naturals, for example, 2705926 + ... + 2705943.

Almost surely, 2^48706821 is an apocalyptic number.

It is an amenable number.

48706821 is a deficient number, since it is larger than the sum of its proper divisors (21647489).

48706821 is a wasteful number, since it uses less digits than its factorization.

48706821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411875 (or 5411872 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 48706821 is about 6979.0272244776. The cubic root of 48706821 is about 365.1992931785.

The spelling of 48706821 in words is "forty-eight million, seven hundred six thousand, eight hundred twenty-one".