1155223444 has 12 divisors (see below), whose sum is σ = 2023056000. Its totient is φ = 577207448.

The previous prime is 1155223411. The next prime is 1155223451. The reversal of 1155223444 is 4443225511.

It is a super-2 number, since 2×1155223444² = 2669082411134442272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94594 + ... + 106105.

It is an arithmetic number, because the mean of its divisors is an integer number (168588000).

Almost surely, 2^1155223444 is an apocalyptic number.

It is an amenable number.

1155223444 is a deficient number, since it is larger than the sum of its proper divisors (867832556).

1155223444 is a wasteful number, since it uses less digits than its factorization.

1155223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202142 (or 202140 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 1155223444 is about 33988.5781403106. The cubic root of 1155223444 is about 1049.2734032846.

Adding to 1155223444 its reverse (4443225511), we get a palindrome (5598448955).

The spelling of 1155223444 in words is "one billion, one hundred fifty-five million, two hundred twenty-three thousand, four hundred forty-four".