5511220555 has 16 divisors (see below), whose sum is σ = 6911357760. Its totient is φ = 4210956288.

The previous prime is 5511220553. The next prime is 5511220567. The reversal of 5511220555 is 5550221155.

It is not a de Polignac number, because 5511220555 - 2¹ = 5511220553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5511220553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41791 + ... + 112999.

It is an arithmetic number, because the mean of its divisors is an integer number (431959860).

Almost surely, 2^5511220555 is an apocalyptic number.

5511220555 is a deficient number, since it is larger than the sum of its proper divisors (1400137205).

5511220555 is a wasteful number, since it uses less digits than its factorization.

5511220555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71910.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 5511220555 is about 74237.5952937593. The cubic root of 5511220555 is about 1766.3737300977.

The spelling of 5511220555 in words is "five billion, five hundred eleven million, two hundred twenty thousand, five hundred fifty-five".