48628781 has 2 divisors, whose sum is σ = 48628782. Its totient is φ = 48628780.

The previous prime is 48628777. The next prime is 48628819. The reversal of 48628781 is 18782684.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 5134756 = 6595^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 48628781 - 2² = 48628777 is a prime.

It is a super-2 number, since 2×48628781² = 4729516683091922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48627781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24314390 + 24314391.

It is an arithmetic number, because the mean of its divisors is an integer number (24314391).

Almost surely, 2^48628781 is an apocalyptic number.

It is an amenable number.

48628781 is a deficient number, since it is larger than the sum of its proper divisors (1).

48628781 is an equidigital number, since it uses as much as digits as its factorization.

48628781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 44.

The square root of 48628781 is about 6973.4339460556. The cubic root of 48628781 is about 365.0041433195.

The spelling of 48628781 in words is "forty-eight million, six hundred twenty-eight thousand, seven hundred eighty-one".