48765781 has 2 divisors, whose sum is σ = 48765782. Its totient is φ = 48765780.

The previous prime is 48765751. The next prime is 48765797. The reversal of 48765781 is 18756784.

48765781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29484900 + 19280881 = 5430^2 + 4391^2 .

It is a cyclic number.

It is not a de Polignac number, because 48765781 - 2⁷ = 48765653 is a prime.

It is a super-2 number, since 2×48765781² = 4756202793079922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48765721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24382890 + 24382891.

It is an arithmetic number, because the mean of its divisors is an integer number (24382891).

Almost surely, 2^48765781 is an apocalyptic number.

It is an amenable number.

48765781 is a deficient number, since it is larger than the sum of its proper divisors (1).

48765781 is an equidigital number, since it uses as much as digits as its factorization.

48765781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 48765781 is about 6983.2500313250. The cubic root of 48765781 is about 365.3465926562.

The spelling of 48765781 in words is "forty-eight million, seven hundred sixty-five thousand, seven hundred eighty-one".