1145222553 has 16 divisors (see below), whose sum is σ = 1578110976. Its totient is φ = 737967120.

The previous prime is 1145222531. The next prime is 1145222563. The reversal of 1145222553 is 3552225411.

It is not a de Polignac number, because 1145222553 - 2¹⁰ = 1145221529 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145222553.

It is not an unprimeable number, because it can be changed into a prime (1145222563) 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 in 15 ways as a sum of consecutive naturals, for example, 75550 + ... + 89432.

It is an arithmetic number, because the mean of its divisors is an integer number (98631936).

Almost surely, 2^1145222553 is an apocalyptic number.

It is an amenable number.

1145222553 is a deficient number, since it is larger than the sum of its proper divisors (432888423).

1145222553 is a wasteful number, since it uses less digits than its factorization.

1145222553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14804.

The product of its digits is 12000, while the sum is 30.

The square root of 1145222553 is about 33841.1369933104. The cubic root of 1145222553 is about 1046.2367333156.

Adding to 1145222553 its reverse (3552225411), we get a palindrome (4697447964).

The spelling of 1145222553 in words is "one billion, one hundred forty-five million, two hundred twenty-two thousand, five hundred fifty-three".