220144550 has 12 divisors (see below), whose sum is σ = 409468956. Its totient is φ = 88057800.

The previous prime is 220144531. The next prime is 220144559. The reversal of 220144550 is 55441022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220144559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2201396 + ... + 2201495.

It is an arithmetic number, because the mean of its divisors is an integer number (34122413).

Almost surely, 2^220144550 is an apocalyptic number.

220144550 is a deficient number, since it is larger than the sum of its proper divisors (189324406).

220144550 is a wasteful number, since it uses less digits than its factorization.

220144550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402903 (or 4402898 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 220144550 is about 14837.2689535507. The cubic root of 220144550 is about 603.8132600350.

Adding to 220144550 its reverse (55441022), we get a palindrome (275585572).

The spelling of 220144550 in words is "two hundred twenty million, one hundred forty-four thousand, five hundred fifty".