1223254556 has 6 divisors (see below), whose sum is σ = 2140695480. Its totient is φ = 611627276.

The previous prime is 1223254553. The next prime is 1223254579. The reversal of 1223254556 is 6554523221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223254553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152906816 + ... + 152906823.

It is an arithmetic number, because the mean of its divisors is an integer number (356782580).

Almost surely, 2^1223254556 is an apocalyptic number.

It is an amenable number.

1223254556 is a deficient number, since it is larger than the sum of its proper divisors (917440924).

1223254556 is a wasteful number, since it uses less digits than its factorization.

1223254556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305813643 (or 305813641 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 1223254556 is about 34975.0561972386. The cubic root of 1223254556 is about 1069.4790476534.

Adding to 1223254556 its reverse (6554523221), we get a palindrome (7777777777).

The spelling of 1223254556 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred fifty-six".