220215455 has 16 divisors (see below), whose sum is σ = 276260544. Its totient is φ = 168199680.

The previous prime is 220215449. The next prime is 220215461. The reversal of 220215455 is 554512022.

It is an interprime number because it is at equal distance from previous prime (220215449) and next prime (220215461).

It is not a de Polignac number, because 220215455 - 2⁴ = 220215439 is a prime.

It is a congruent number.

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, 74567 + ... + 77463.

It is an arithmetic number, because the mean of its divisors is an integer number (17266284).

Almost surely, 2^220215455 is an apocalyptic number.

220215455 is a deficient number, since it is larger than the sum of its proper divisors (56045089).

220215455 is a wasteful number, since it uses less digits than its factorization.

220215455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 220215455 is about 14839.6581833949. The cubic root of 220215455 is about 603.8780792391.

Adding to 220215455 its reverse (554512022), we get a palindrome (774727477).

The spelling of 220215455 in words is "two hundred twenty million, two hundred fifteen thousand, four hundred fifty-five".