5555218 has 4 divisors (see below), whose sum is σ = 8332830. Its totient is φ = 2777608.

The previous prime is 5555197. The next prime is 5555219. The reversal of 5555218 is 8125555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4695889 + 859329 = 2167^2 + 927^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5555218.

It is not an unprimeable number, because it can be changed into a prime (5555219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388803 + ... + 1388806.

Almost surely, 2^5555218 is an apocalyptic number.

5555218 is a deficient number, since it is larger than the sum of its proper divisors (2777612).

5555218 is a wasteful number, since it uses less digits than its factorization.

5555218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777611.

The product of its digits is 10000, while the sum is 31.

The square root of 5555218 is about 2356.9509965207. The cubic root of 5555218 is about 177.1061743947.

The spelling of 5555218 in words is "five million, five hundred fifty-five thousand, two hundred eighteen".