1131065552 has 20 divisors (see below), whose sum is σ = 2192448960. Its totient is φ = 565272288.

The previous prime is 1131065521. The next prime is 1131065563. The reversal of 1131065552 is 2555601311.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22313 + ... + 52535.

It is an arithmetic number, because the mean of its divisors is an integer number (109622448).

Almost surely, 2^1131065552 is an apocalyptic number.

It is an amenable number.

1131065552 is a deficient number, since it is larger than the sum of its proper divisors (1061383408).

1131065552 is a wasteful number, since it uses less digits than its factorization.

1131065552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32570 (or 32564 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1131065552 is about 33631.3180235328. The cubic root of 1131065552 is about 1041.9077262292.

Adding to 1131065552 its reverse (2555601311), we get a palindrome (3686666863).

The spelling of 1131065552 in words is "one billion, one hundred thirty-one million, sixty-five thousand, five hundred fifty-two".