223420555 has 8 divisors (see below), whose sum is σ = 268192512. Its totient is φ = 178677888.

The previous prime is 223420543. The next prime is 223420567. The reversal of 223420555 is 555024322.

It is an interprime number because it is at equal distance from previous prime (223420543) and next prime (223420567).

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

It is a cyclic number.

It is not a de Polignac number, because 223420555 - 2⁵ = 223420523 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16534 + ... + 26836.

It is an arithmetic number, because the mean of its divisors is an integer number (33524064).

Almost surely, 2^223420555 is an apocalyptic number.

223420555 is a deficient number, since it is larger than the sum of its proper divisors (44771957).

223420555 is a wasteful number, since it uses less digits than its factorization.

223420555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14645.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 223420555 is about 14947.2591132957. The cubic root of 223420555 is about 606.7936706623.

Adding to 223420555 its reverse (555024322), we get a palindrome (778444877).

The spelling of 223420555 in words is "two hundred twenty-three million, four hundred twenty thousand, five hundred fifty-five".