50221303561 has 16 divisors (see below), whose sum is σ = 59009747328. Its totient is φ = 42137683200.

The previous prime is 50221303543. The next prime is 50221303579. The reversal of 50221303561 is 16530312205.

It is an interprime number because it is at equal distance from previous prime (50221303543) and next prime (50221303579).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50221303561 is a prime.

It is a super-2 number, since 2×50221303561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50221303511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167345 + ... + 1209601.

It is an arithmetic number, because the mean of its divisors is an integer number (3688109208).

Almost surely, 2^50221303561 is an apocalyptic number.

It is an amenable number.

50221303561 is a deficient number, since it is larger than the sum of its proper divisors (8788443767).

50221303561 is a wasteful number, since it uses less digits than its factorization.

50221303561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50592.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 50221303561 its reverse (16530312205), we get a palindrome (66751615766).

The spelling of 50221303561 in words is "fifty billion, two hundred twenty-one million, three hundred three thousand, five hundred sixty-one".