1123255617 has 16 divisors (see below), whose sum is σ = 1635035328. Its totient is φ = 680257280.

The previous prime is 1123255607. The next prime is 1123255649. The reversal of 1123255617 is 7165523211.

It is a cyclic number.

It is not a de Polignac number, because 1123255617 - 2²⁰ = 1122207041 is a prime.

It is a super-2 number, since 2×1123255617² = 2523406362244101378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1123255607) 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, 35413 + ... + 59165.

It is an arithmetic number, because the mean of its divisors is an integer number (102189708).

Almost surely, 2^1123255617 is an apocalyptic number.

It is an amenable number.

1123255617 is a deficient number, since it is larger than the sum of its proper divisors (511779711).

1123255617 is a wasteful number, since it uses less digits than its factorization.

1123255617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25200.

The product of its digits is 12600, while the sum is 33.

The square root of 1123255617 is about 33515.0058481272. The cubic root of 1123255617 is about 1039.5040833981.

Adding to 1123255617 its reverse (7165523211), we get a palindrome (8288778828).

The spelling of 1123255617 in words is "one billion, one hundred twenty-three million, two hundred fifty-five thousand, six hundred seventeen".