1145223455 has 16 divisors (see below), whose sum is σ = 1399464000. Its totient is φ = 899439360.

The previous prime is 1145223451. The next prime is 1145223467. The reversal of 1145223455 is 5543225411.

It is not a de Polignac number, because 1145223455 - 2² = 1145223451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145223451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170246 + ... + 176844.

It is an arithmetic number, because the mean of its divisors is an integer number (87466500).

Almost surely, 2^1145223455 is an apocalyptic number.

1145223455 is a deficient number, since it is larger than the sum of its proper divisors (254240545).

1145223455 is an equidigital number, since it uses as much as digits as its factorization.

1145223455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234.

The product of its digits is 24000, while the sum is 32.

The square root of 1145223455 is about 33841.1503202831. The cubic root of 1145223455 is about 1046.2370079944.

Adding to 1145223455 its reverse (5543225411), we get a palindrome (6688448866).

The spelling of 1145223455 in words is "one billion, one hundred forty-five million, two hundred twenty-three thousand, four hundred fifty-five".