48357821 has 4 divisors (see below), whose sum is σ = 48374172. Its totient is φ = 48341472.

The previous prime is 48357797. The next prime is 48357839. The reversal of 48357821 is 12875384.

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 22905796 + 25452025 = 4786^2 + 5045^2 .

It is a cyclic number.

It is not a de Polignac number, because 48357821 - 2¹⁰ = 48356797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48357871) 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, 2360 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (12093543).

Almost surely, 2^48357821 is an apocalyptic number.

It is an amenable number.

48357821 is a deficient number, since it is larger than the sum of its proper divisors (16351).

48357821 is a wasteful number, since it uses less digits than its factorization.

48357821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16350.

The product of its digits is 53760, while the sum is 38.

The square root of 48357821 is about 6953.9787891537. The cubic root of 48357821 is about 364.3249448093.

The spelling of 48357821 in words is "forty-eight million, three hundred fifty-seven thousand, eight hundred twenty-one".