1223505455 has 8 divisors (see below), whose sum is σ = 1507888032. Its totient is φ = 952350048.

The previous prime is 1223505443. The next prime is 1223505461. The reversal of 1223505455 is 5545053221.

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 1223505455 - 2²² = 1219311151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306587 + ... + 3306956.

It is an arithmetic number, because the mean of its divisors is an integer number (188486004).

Almost surely, 2^1223505455 is an apocalyptic number.

1223505455 is a deficient number, since it is larger than the sum of its proper divisors (284382577).

1223505455 is an equidigital number, since it uses as much as digits as its factorization.

1223505455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613585.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1223505455 is about 34978.6428410252. The cubic root of 1223505455 is about 1069.5521621382.

Adding to 1223505455 its reverse (5545053221), we get a palindrome (6768558676).

The spelling of 1223505455 in words is "one billion, two hundred twenty-three million, five hundred five thousand, four hundred fifty-five".