55220466 has 32 divisors (see below), whose sum is σ = 130573440. Its totient is φ = 15232896.

The previous prime is 55220419. The next prime is 55220491. The reversal of 55220466 is 66402255.

55220466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21451 + ... + 23886.

It is an arithmetic number, because the mean of its divisors is an integer number (4080420).

Almost surely, 2^55220466 is an apocalyptic number.

55220466 is an abundant number, since it is smaller than the sum of its proper divisors (75352974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55220466 is a wasteful number, since it uses less digits than its factorization.

55220466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45378.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 55220466 is about 7431.0474362636. The cubic root of 55220466 is about 380.8027030106.

The spelling of 55220466 in words is "fifty-five million, two hundred twenty thousand, four hundred sixty-six".