48866021 has 2 divisors, whose sum is σ = 48866022. Its totient is φ = 48866020.

The previous prime is 48865997. The next prime is 48866023. The reversal of 48866021 is 12066884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 2217121 = 6830^2 + 1489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48866021 is a prime.

It is a Sophie Germain prime.

Together with 48866023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48866023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24433010 + 24433011.

It is an arithmetic number, because the mean of its divisors is an integer number (24433011).

Almost surely, 2^48866021 is an apocalyptic number.

It is an amenable number.

48866021 is a deficient number, since it is larger than the sum of its proper divisors (1).

48866021 is an equidigital number, since it uses as much as digits as its factorization.

48866021 is an evil number, because the sum of its binary digits is even.

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

The square root of 48866021 is about 6990.4235207890. The cubic root of 48866021 is about 365.5967494767.

The spelling of 48866021 in words is "forty-eight million, eight hundred sixty-six thousand, twenty-one".