1220045455 has 8 divisors (see below), whose sum is σ = 1511282304. Its totient is φ = 944551200.

The previous prime is 1220045429. The next prime is 1220045473. The reversal of 1220045455 is 5545400221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1220045455 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3935476 + ... + 3935785.

It is an arithmetic number, because the mean of its divisors is an integer number (188910288).

Almost surely, 2^1220045455 is an apocalyptic number.

1220045455 is a deficient number, since it is larger than the sum of its proper divisors (291236849).

1220045455 is an equidigital number, since it uses as much as digits as its factorization.

1220045455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871297.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1220045455 is about 34929.1490735174. The cubic root of 1220045455 is about 1068.5430004810.

Adding to 1220045455 its reverse (5545400221), we get a palindrome (6765445676).

The spelling of 1220045455 in words is "one billion, two hundred twenty million, forty-five thousand, four hundred fifty-five".