48951209 has 2 divisors, whose sum is σ = 48951210. Its totient is φ = 48951208.

The previous prime is 48951193. The next prime is 48951223. The reversal of 48951209 is 90215984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34105600 + 14845609 = 5840^2 + 3853^2 .

It is a cyclic number.

It is not a de Polignac number, because 48951209 - 2⁴ = 48951193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (48951229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24475604 + 24475605.

It is an arithmetic number, because the mean of its divisors is an integer number (24475605).

Almost surely, 2^48951209 is an apocalyptic number.

It is an amenable number.

48951209 is a deficient number, since it is larger than the sum of its proper divisors (1).

48951209 is an equidigital number, since it uses as much as digits as its factorization.

48951209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 48951209 is about 6996.5140605876. The cubic root of 48951209 is about 365.8090740788.

The spelling of 48951209 in words is "forty-eight million, nine hundred fifty-one thousand, two hundred nine".