1166227571 has 8 divisors (see below), whose sum is σ = 1187435760. Its totient is φ = 1145067552.

The previous prime is 1166227537. The next prime is 1166227577. The reversal of 1166227571 is 1757226611.

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

It is a cyclic number.

It is not a de Polignac number, because 1166227571 - 2²² = 1162033267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166227577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38741 + ... + 61913.

It is an arithmetic number, because the mean of its divisors is an integer number (148429470).

Almost surely, 2^1166227571 is an apocalyptic number.

1166227571 is a deficient number, since it is larger than the sum of its proper divisors (21208189).

1166227571 is an equidigital number, since it uses as much as digits as its factorization.

1166227571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24085.

The product of its digits is 35280, while the sum is 38.

The square root of 1166227571 is about 34150.0742458929. The cubic root of 1166227571 is about 1052.5945122689.

The spelling of 1166227571 in words is "one billion, one hundred sixty-six million, two hundred twenty-seven thousand, five hundred seventy-one".