48221009 has 2 divisors, whose sum is σ = 48221010. Its totient is φ = 48221008.

The previous prime is 48221003. The next prime is 48221021. The reversal of 48221009 is 90012284.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 3598609 = 6680^2 + 1897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48221009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (48221003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24110504 + 24110505.

It is an arithmetic number, because the mean of its divisors is an integer number (24110505).

Almost surely, 2^48221009 is an apocalyptic number.

It is an amenable number.

48221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

48221009 is an equidigital number, since it uses as much as digits as its factorization.

48221009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 48221009 is about 6944.1348633217. The cubic root of 48221009 is about 363.9810424656.

The spelling of 48221009 in words is "forty-eight million, two hundred twenty-one thousand, nine".