50720881 has 2 divisors, whose sum is σ = 50720882. Its totient is φ = 50720880.

The previous prime is 50720869. The next prime is 50720897. The reversal of 50720881 is 18802705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 13571856 = 6095^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 50720881 - 2⁷ = 50720753 is a prime.

It is a super-2 number, since 2×50720881² = 5145215538832322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50720801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360440 + 25360441.

It is an arithmetic number, because the mean of its divisors is an integer number (25360441).

Almost surely, 2^50720881 is an apocalyptic number.

It is an amenable number.

50720881 is a deficient number, since it is larger than the sum of its proper divisors (1).

50720881 is an equidigital number, since it uses as much as digits as its factorization.

50720881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 50720881 is about 7121.8593779995. The cubic root of 50720881 is about 370.1652074500.

The spelling of 50720881 in words is "fifty million, seven hundred twenty thousand, eight hundred eighty-one".