45220155 has 16 divisors (see below), whose sum is σ = 72606240. Its totient is φ = 24032768.

The previous prime is 45220117. The next prime is 45220177. The reversal of 45220155 is 55102254.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45220155 - 2⁷ = 45220027 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 750 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (4537890).

Almost surely, 2^45220155 is an apocalyptic number.

45220155 is a deficient number, since it is larger than the sum of its proper divisors (27386085).

45220155 is a wasteful number, since it uses less digits than its factorization.

45220155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10590.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 45220155 is about 6724.5932962522. The cubic root of 45220155 is about 356.2684373345.

The spelling of 45220155 in words is "forty-five million, two hundred twenty thousand, one hundred fifty-five".