50811777 has 12 divisors (see below), whose sum is σ = 73457124. Its totient is φ = 33845760.

The previous prime is 50811769. The next prime is 50811779. The reversal of 50811777 is 77711805.

It can be written as a sum of positive squares in 2 ways, for example, as 38638656 + 12173121 = 6216^2 + 3489^2 .

It is not a de Polignac number, because 50811777 - 2³ = 50811769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50811779) 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, 17373 + ... + 20085.

It is an arithmetic number, because the mean of its divisors is an integer number (6121427).

Almost surely, 2^50811777 is an apocalyptic number.

It is an amenable number.

50811777 is a deficient number, since it is larger than the sum of its proper divisors (22645347).

50811777 is a wasteful number, since it uses less digits than its factorization.

50811777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 4797 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 36.

The square root of 50811777 is about 7128.2380010771. The cubic root of 50811777 is about 370.3861976805.

The spelling of 50811777 in words is "fifty million, eight hundred eleven thousand, seven hundred seventy-seven".