50635681 has 2 divisors, whose sum is σ = 50635682. Its totient is φ = 50635680.

The previous prime is 50635667. The next prime is 50635729. The reversal of 50635681 is 18653605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 17181025 = 5784^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 50635681 - 2¹⁵ = 50602913 is a prime.

It is a super-2 number, since 2×50635681² = 5127944380667522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50635601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25317840 + 25317841.

It is an arithmetic number, because the mean of its divisors is an integer number (25317841).

Almost surely, 2^50635681 is an apocalyptic number.

It is an amenable number.

50635681 is a deficient number, since it is larger than the sum of its proper divisors (1).

50635681 is an equidigital number, since it uses as much as digits as its factorization.

50635681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 50635681 is about 7115.8752799638. The cubic root of 50635681 is about 369.9578257262.

The spelling of 50635681 in words is "fifty million, six hundred thirty-five thousand, six hundred eighty-one".