4550554221481 has 2 divisors, whose sum is σ = 4550554221482. Its totient is φ = 4550554221480.

The previous prime is 4550554221463. The next prime is 4550554221601. The reversal of 4550554221481 is 1841224550554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4165236073881 + 385318147600 = 2040891^2 + 620740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4550554221481 is a prime.

It is a super-2 number, since 2×4550554221481² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4550554222481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2275277110740 + 2275277110741.

It is an arithmetic number, because the mean of its divisors is an integer number (2275277110741).

Almost surely, 2^{4550554221481} is an apocalyptic number.

It is an amenable number.

4550554221481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4550554221481 is an equidigital number, since it uses as much as digits as its factorization.

4550554221481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280000, while the sum is 46.

The spelling of 4550554221481 in words is "four trillion, five hundred fifty billion, five hundred fifty-four million, two hundred twenty-one thousand, four hundred eighty-one".