1220550353 has 6 divisors (see below), whose sum is σ = 1341596802. Its totient is φ = 1109591120.

The previous prime is 1220550349. The next prime is 1220550427. The reversal of 1220550353 is 3530550221.

It can be written as a sum of positive squares in only one way, i.e., 1023232144 + 197318209 = 31988^2 + 14047^2 .

It is not a de Polignac number, because 1220550353 - 2² = 1220550349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220750353) 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, 5043476 + ... + 5043717.

It is an arithmetic number, because the mean of its divisors is an integer number (223599467).

Almost surely, 2^1220550353 is an apocalyptic number.

It is an amenable number.

1220550353 is a deficient number, since it is larger than the sum of its proper divisors (121046449).

1220550353 is a wasteful number, since it uses less digits than its factorization.

1220550353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087215 (or 10087204 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1220550353 is about 34936.3757851326. The cubic root of 1220550353 is about 1068.6903804595.

The spelling of 1220550353 in words is "one billion, two hundred twenty million, five hundred fifty thousand, three hundred fifty-three".