45220055 has 4 divisors (see below), whose sum is σ = 54264072. Its totient is φ = 36176040.

The previous prime is 45220039. The next prime is 45220079. The reversal of 45220055 is 55002254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55002254 = 2 ⋅27501127.

It is not a de Polignac number, because 45220055 - 2⁴ = 45220039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45220055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4522001 + ... + 4522010.

It is an arithmetic number, because the mean of its divisors is an integer number (13566018).

Almost surely, 2^45220055 is an apocalyptic number.

45220055 is a deficient number, since it is larger than the sum of its proper divisors (9044017).

45220055 is an equidigital number, since it uses as much as digits as its factorization.

45220055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044016.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 45220055 is about 6724.5858608542. The cubic root of 45220055 is about 356.2681747166.

It can be divided in two parts, 4522005 and 5, that multiplied together give a square (22610025 = 4755²).

The spelling of 45220055 in words is "forty-five million, two hundred twenty thousand, fifty-five".