50655561 has 12 divisors (see below), whose sum is σ = 74239536. Its totient is φ = 30700120.

The previous prime is 50655557. The next prime is 50655569. The reversal of 50655561 is 16555605.

It is not a de Polignac number, because 50655561 - 2² = 50655557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (50655569) 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 in 11 ways as a sum of consecutive naturals, for example, 69411 + ... + 70136.

It is an arithmetic number, because the mean of its divisors is an integer number (6186628).

Almost surely, 2^50655561 is an apocalyptic number.

It is an amenable number.

50655561 is a deficient number, since it is larger than the sum of its proper divisors (23583975).

50655561 is a wasteful number, since it uses less digits than its factorization.

50655561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139572 (or 139561 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 50655561 is about 7117.2720195311. The cubic root of 50655561 is about 370.0062355901.

The spelling of 50655561 in words is "fifty million, six hundred fifty-five thousand, five hundred sixty-one".