50021761 has 2 divisors, whose sum is σ = 50021762. Its totient is φ = 50021760.

The previous prime is 50021753. The next prime is 50021767. The reversal of 50021761 is 16712005.

50021761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 6051600 = 6631^2 + 2460^2 .

It is a cyclic number.

It is not a de Polignac number, because 50021761 - 2³ = 50021753 is a prime.

It is a super-2 number, since 2×50021761² = 5004353147082242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50021767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010880 + 25010881.

It is an arithmetic number, because the mean of its divisors is an integer number (25010881).

Almost surely, 2^50021761 is an apocalyptic number.

It is an amenable number.

50021761 is a deficient number, since it is larger than the sum of its proper divisors (1).

50021761 is an equidigital number, since it uses as much as digits as its factorization.

50021761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 50021761 is about 7072.6063795464. The cubic root of 50021761 is about 368.4565875854.

Adding to 50021761 its reverse (16712005), we get a palindrome (66733766).

The spelling of 50021761 in words is "fifty million, twenty-one thousand, seven hundred sixty-one".