220040555 has 8 divisors (see below), whose sum is σ = 301769952. Its totient is φ = 150884928.

The previous prime is 220040551. The next prime is 220040599. The reversal of 220040555 is 555040022.

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 220040555 - 2² = 220040551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220040555.

It is not an unprimeable number, because it can be changed into a prime (220040551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3143402 + ... + 3143471.

It is an arithmetic number, because the mean of its divisors is an integer number (37721244).

Almost surely, 2^220040555 is an apocalyptic number.

220040555 is a deficient number, since it is larger than the sum of its proper divisors (81729397).

220040555 is an equidigital number, since it uses as much as digits as its factorization.

220040555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286885.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 220040555 is about 14833.7640199647. The cubic root of 220040555 is about 603.7181657733.

Adding to 220040555 its reverse (555040022), we get a palindrome (775080577).

The spelling of 220040555 in words is "two hundred twenty million, forty thousand, five hundred fifty-five".