48637681 has 2 divisors, whose sum is σ = 48637682. Its totient is φ = 48637680.

The previous prime is 48637657. The next prime is 48637741. The reversal of 48637681 is 18673684.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31539456 + 17098225 = 5616^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 48637681 - 2⁵ = 48637649 is a prime.

It is a super-2 number, since 2×48637681² = 4731248026115522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (48637781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24318840 + 24318841.

It is an arithmetic number, because the mean of its divisors is an integer number (24318841).

Almost surely, 2^48637681 is an apocalyptic number.

It is an amenable number.

48637681 is a deficient number, since it is larger than the sum of its proper divisors (1).

48637681 is an equidigital number, since it uses as much as digits as its factorization.

48637681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 48637681 is about 6974.0720529688. The cubic root of 48637681 is about 365.0264095484.

It can be divided in two parts, 4863 and 7681, that added together give a square (12544 = 112²).

The spelling of 48637681 in words is "forty-eight million, six hundred thirty-seven thousand, six hundred eighty-one".