50855561 has 2 divisors, whose sum is σ = 50855562. Its totient is φ = 50855560.

The previous prime is 50855549. The next prime is 50855573. The reversal of 50855561 is 16555805.

It is a balanced prime because it is at equal distance from previous prime (50855549) and next prime (50855573).

It can be written as a sum of positive squares in only one way, i.e., 38987536 + 11868025 = 6244^2 + 3445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50855561 is a prime.

It is not a weakly prime, because it can be changed into another prime (50855591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25427780 + 25427781.

It is an arithmetic number, because the mean of its divisors is an integer number (25427781).

Almost surely, 2^50855561 is an apocalyptic number.

It is an amenable number.

50855561 is a deficient number, since it is larger than the sum of its proper divisors (1).

50855561 is an equidigital number, since it uses as much as digits as its factorization.

50855561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 50855561 is about 7131.3085054568. The cubic root of 50855561 is about 370.4925531652.

The spelling of 50855561 in words is "fifty million, eight hundred fifty-five thousand, five hundred sixty-one".