3220545155 has 4 divisors (see below), whose sum is σ = 3864654192. Its totient is φ = 2576436120.

The previous prime is 3220545137. The next prime is 3220545179. The reversal of 3220545155 is 5515450223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5515450223 = 61153 ⋅90191.

It is not a de Polignac number, because 3220545155 - 2¹⁴ = 3220528771 is a prime.

It is a super-2 number, since 2×3220545155² = 20743822190787948050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322054511 + ... + 322054520.

It is an arithmetic number, because the mean of its divisors is an integer number (966163548).

Almost surely, 2^3220545155 is an apocalyptic number.

3220545155 is a deficient number, since it is larger than the sum of its proper divisors (644109037).

3220545155 is an equidigital number, since it uses as much as digits as its factorization.

3220545155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644109036.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 3220545155 is about 56749.8471804110. The cubic root of 3220545155 is about 1476.7595823693.

Adding to 3220545155 its reverse (5515450223), we get a palindrome (8735995378).

The spelling of 3220545155 in words is "three billion, two hundred twenty million, five hundred forty-five thousand, one hundred fifty-five".