50720489 has 2 divisors, whose sum is σ = 50720490. Its totient is φ = 50720488.

The previous prime is 50720459. The next prime is 50720491. The reversal of 50720489 is 98402705.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 10778089 = 6320^2 + 3283^2 .

It is a cyclic number.

It is not a de Polignac number, because 50720489 - 2¹⁶ = 50654953 is a prime.

It is a Sophie Germain prime.

Together with 50720491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50720419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360244 + 25360245.

It is an arithmetic number, because the mean of its divisors is an integer number (25360245).

Almost surely, 2^50720489 is an apocalyptic number.

It is an amenable number.

50720489 is a deficient number, since it is larger than the sum of its proper divisors (1).

50720489 is an equidigital number, since it uses as much as digits as its factorization.

50720489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 50720489 is about 7121.8318570435. The cubic root of 50720489 is about 370.1642538313.

The spelling of 50720489 in words is "fifty million, seven hundred twenty thousand, four hundred eighty-nine".