55219558 has 8 divisors (see below), whose sum is σ = 82943640. Its totient is φ = 27571680.

The previous prime is 55219547. The next prime is 55219559. The reversal of 55219558 is 85591255.

55219558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55219558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55219559) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17203 + ... + 20158.

It is an arithmetic number, because the mean of its divisors is an integer number (10367955).

Almost surely, 2^55219558 is an apocalyptic number.

55219558 is a deficient number, since it is larger than the sum of its proper divisors (27724082).

55219558 is a wasteful number, since it uses less digits than its factorization.

55219558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38102.

The product of its digits is 90000, while the sum is 40.

The square root of 55219558 is about 7430.9863409913. The cubic root of 55219558 is about 380.8006157968.

The spelling of 55219558 in words is "fifty-five million, two hundred nineteen thousand, five hundred fifty-eight".