1161552566 has 8 divisors (see below), whose sum is σ = 1742505600. Its totient is φ = 580717368.

The previous prime is 1161552493. The next prime is 1161552571. The reversal of 1161552566 is 6652551611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 1835 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (217813200).

Almost surely, 2^1161552566 is an apocalyptic number.

1161552566 is a deficient number, since it is larger than the sum of its proper divisors (580953034).

1161552566 is a wasteful number, since it uses less digits than its factorization.

1161552566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58918.

The product of its digits is 54000, while the sum is 38.

The square root of 1161552566 is about 34081.5575641724. The cubic root of 1161552566 is about 1051.1861322949.

The spelling of 1161552566 in words is "one billion, one hundred sixty-one million, five hundred fifty-two thousand, five hundred sixty-six".