30220555 has 8 divisors (see below), whose sum is σ = 36302832. Its totient is φ = 24151008.

The previous prime is 30220501. The next prime is 30220571. The reversal of 30220555 is 55502203.

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 30220555 - 2¹⁹ = 29696267 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, 3217 + ... + 8413.

It is an arithmetic number, because the mean of its divisors is an integer number (4537854).

Almost surely, 2^30220555 is an apocalyptic number.

30220555 is a deficient number, since it is larger than the sum of its proper divisors (6082277).

30220555 is a wasteful number, since it uses less digits than its factorization.

30220555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 30220555 is about 5497.3225301050. The cubic root of 30220555 is about 311.4828539833.

Adding to 30220555 its reverse (55502203), we get a palindrome (85722758).

The spelling of 30220555 in words is "thirty million, two hundred twenty thousand, five hundred fifty-five".