1133201555 has 16 divisors (see below), whose sum is σ = 1442772000. Its totient is φ = 851492352.

The previous prime is 1133201551. The next prime is 1133201579. The reversal of 1133201555 is 5551023311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1133201555 - 2² = 1133201551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1133201551) 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, 29057 + ... + 55773.

It is an arithmetic number, because the mean of its divisors is an integer number (90173250).

Almost surely, 2^1133201555 is an apocalyptic number.

1133201555 is a deficient number, since it is larger than the sum of its proper divisors (309570445).

1133201555 is a wasteful number, since it uses less digits than its factorization.

1133201555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27238.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1133201555 is about 33663.0592044158. The cubic root of 1133201555 is about 1042.5631903146.

Adding to 1133201555 its reverse (5551023311), we get a palindrome (6684224866).

The spelling of 1133201555 in words is "one billion, one hundred thirty-three million, two hundred one thousand, five hundred fifty-five".