50221777 has 4 divisors (see below), whose sum is σ = 50250816. Its totient is φ = 50192740.

The previous prime is 50221771. The next prime is 50221781. The reversal of 50221777 is 77712205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77712205 = 5 ⋅15542441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50221777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50221771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11749 + ... + 15442.

It is an arithmetic number, because the mean of its divisors is an integer number (12562704).

Almost surely, 2^50221777 is an apocalyptic number.

It is an amenable number.

50221777 is a deficient number, since it is larger than the sum of its proper divisors (29039).

50221777 is a wasteful number, since it uses less digits than its factorization.

50221777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29038.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 50221777 is about 7086.7324628492. The cubic root of 50221777 is about 368.9470354819.

The spelling of 50221777 in words is "fifty million, two hundred twenty-one thousand, seven hundred seventy-seven".