45511502221 has 2 divisors, whose sum is σ = 45511502222. Its totient is φ = 45511502220.

The previous prime is 45511502219. The next prime is 45511502243. The reversal of 45511502221 is 12220511554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45480254121 + 31248100 = 213261^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 45511502221 - 2¹ = 45511502219 is a prime.

Together with 45511502219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 45511502221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45511502821) 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 as a sum of consecutive naturals, namely, 22755751110 + 22755751111.

It is an arithmetic number, because the mean of its divisors is an integer number (22755751111).

Almost surely, 2^45511502221 is an apocalyptic number.

It is an amenable number.

45511502221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45511502221 is an equidigital number, since it uses as much as digits as its factorization.

45511502221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 45511502221 in words is "forty-five billion, five hundred eleven million, five hundred two thousand, two hundred twenty-one".