45221606555 has 4 divisors (see below), whose sum is σ = 54265927872. Its totient is φ = 36177285240.

The previous prime is 45221606537. The next prime is 45221606581. The reversal of 45221606555 is 55560612254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45221606555 - 2²⁰ = 45220557979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4522160651 + ... + 4522160660.

It is an arithmetic number, because the mean of its divisors is an integer number (13566481968).

Almost surely, 2^45221606555 is an apocalyptic number.

45221606555 is a deficient number, since it is larger than the sum of its proper divisors (9044321317).

45221606555 is an equidigital number, since it uses as much as digits as its factorization.

45221606555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044321316.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 45221606555 in words is "forty-five billion, two hundred twenty-one million, six hundred six thousand, five hundred fifty-five".