48781289 has 2 divisors, whose sum is σ = 48781290. Its totient is φ = 48781288.

The previous prime is 48781261. The next prime is 48781339. The reversal of 48781289 is 98218784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30162064 + 18619225 = 5492^2 + 4315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48781289 is a prime.

It is a super-2 number, since 2×48781289² = 4759228313003042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (48781489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24390644 + 24390645.

It is an arithmetic number, because the mean of its divisors is an integer number (24390645).

Almost surely, 2^48781289 is an apocalyptic number.

It is an amenable number.

48781289 is a deficient number, since it is larger than the sum of its proper divisors (1).

48781289 is an equidigital number, since it uses as much as digits as its factorization.

48781289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 47.

The square root of 48781289 is about 6984.3603143022. The cubic root of 48781289 is about 365.3853164933.

The spelling of 48781289 in words is "forty-eight million, seven hundred eighty-one thousand, two hundred eighty-nine".