54221555 has 8 divisors (see below), whose sum is σ = 65563344. Its totient is φ = 43045600.

The previous prime is 54221527. The next prime is 54221567. The reversal of 54221555 is 55512245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54221555 - 2¹⁴ = 54205171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 40736 + ... + 42045.

It is an arithmetic number, because the mean of its divisors is an integer number (8195418).

Almost surely, 2^54221555 is an apocalyptic number.

54221555 is a deficient number, since it is larger than the sum of its proper divisors (11341789).

54221555 is a wasteful number, since it uses less digits than its factorization.

54221555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82917.

The product of its digits is 10000, while the sum is 29.

The square root of 54221555 is about 7363.5287057225. The cubic root of 54221555 is about 378.4925388854.

The spelling of 54221555 in words is "fifty-four million, two hundred twenty-one thousand, five hundred fifty-five".