1155120052 has 6 divisors (see below), whose sum is σ = 2021460098. Its totient is φ = 577560024.

The previous prime is 1155120023. The next prime is 1155120077. The reversal of 1155120052 is 2500215511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 779303056 + 375816996 = 27916^2 + 19386^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144390003 + ... + 144390010.

Almost surely, 2^1155120052 is an apocalyptic number.

It is an amenable number.

1155120052 is a deficient number, since it is larger than the sum of its proper divisors (866340046).

1155120052 is a wasteful number, since it uses less digits than its factorization.

1155120052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288780017 (or 288780015 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1155120052 is about 33987.0571247350. The cubic root of 1155120052 is about 1049.2420991783.

Adding to 1155120052 its reverse (2500215511), we get a palindrome (3655335563).

The spelling of 1155120052 in words is "one billion, one hundred fifty-five million, one hundred twenty thousand, fifty-two".