50555561 has 8 divisors (see below), whose sum is σ = 60818880. Its totient is φ = 41052528.

The previous prime is 50555543. The next prime is 50555563. The reversal of 50555561 is 16555505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50555561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50555563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189926 + ... + 190191.

It is an arithmetic number, because the mean of its divisors is an integer number (7602360).

Almost surely, 2^50555561 is an apocalyptic number.

It is an amenable number.

50555561 is a deficient number, since it is larger than the sum of its proper divisors (10263319).

50555561 is a wasteful number, since it uses less digits than its factorization.

50555561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380143.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 50555561 is about 7110.2433854264. The cubic root of 50555561 is about 369.7625966725.

The spelling of 50555561 in words is "fifty million, five hundred fifty-five thousand, five hundred sixty-one".