50555565 has 24 divisors (see below), whose sum is σ = 87855768. Its totient is φ = 26893440.

The previous prime is 50555563. The next prime is 50555581. The reversal of 50555565 is 56555505.

50555565 is a `hidden beast` number, since 50 + 55 + 556 + 5 = 666.

50555565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11655396 + 38900169 = 3414^2 + 6237^2 .

It is not a de Polignac number, because 50555565 - 2¹ = 50555563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50555563) 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 in 23 ways as a sum of consecutive naturals, for example, 19527 + ... + 21963.

It is an arithmetic number, because the mean of its divisors is an integer number (3660657).

Almost surely, 2^50555565 is an apocalyptic number.

It is an amenable number.

50555565 is a deficient number, since it is larger than the sum of its proper divisors (37300203).

50555565 is a wasteful number, since it uses less digits than its factorization.

50555565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 50555565 is about 7110.2436667107. The cubic root of 50555565 is about 369.7626064245.

The spelling of 50555565 in words is "fifty million, five hundred fifty-five thousand, five hundred sixty-five".