220144755 has 8 divisors (see below), whose sum is σ = 352231632. Its totient is φ = 117410528.

The previous prime is 220144739. The next prime is 220144777. The reversal of 220144755 is 557441022.

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 220144755 - 2⁴ = 220144739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7338144 + ... + 7338173.

It is an arithmetic number, because the mean of its divisors is an integer number (44028954).

Almost surely, 2^220144755 is an apocalyptic number.

220144755 is a deficient number, since it is larger than the sum of its proper divisors (132086877).

220144755 is a wasteful number, since it uses less digits than its factorization.

220144755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14676325.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 220144755 is about 14837.2758618285. The cubic root of 220144755 is about 603.8134474599.

Adding to 220144755 its reverse (557441022), we get a palindrome (777585777).

The spelling of 220144755 in words is "two hundred twenty million, one hundred forty-four thousand, seven hundred fifty-five".