48786581 has 2 divisors, whose sum is σ = 48786582. Its totient is φ = 48786580.

The previous prime is 48786571. The next prime is 48786589. The reversal of 48786581 is 18568784.

It is a happy number.

48786581 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., 36120100 + 12666481 = 6010^2 + 3559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48786581 is a prime.

It is a super-2 number, since 2×48786581² = 4760260971339122, which contains 22 as substring.

It is a Sophie Germain prime.

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 (48786589) 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, 24393290 + 24393291.

It is an arithmetic number, because the mean of its divisors is an integer number (24393291).

Almost surely, 2^48786581 is an apocalyptic number.

It is an amenable number.

48786581 is a deficient number, since it is larger than the sum of its proper divisors (1).

48786581 is an equidigital number, since it uses as much as digits as its factorization.

48786581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 47.

The square root of 48786581 is about 6984.7391504622. The cubic root of 48786581 is about 365.3985288623.

The spelling of 48786581 in words is "forty-eight million, seven hundred eighty-six thousand, five hundred eighty-one".