1161497227 has 8 divisors (see below), whose sum is σ = 1333776960. Its totient is φ = 1000332360.

The previous prime is 1161497213. The next prime is 1161497251. The reversal of 1161497227 is 7227941611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161497227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161497227.

It is not an unprimeable number, because it can be changed into a prime (1161497027) 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, 2778493 + ... + 2778910.

It is an arithmetic number, because the mean of its divisors is an integer number (166722120).

Almost surely, 2^1161497227 is an apocalyptic number.

1161497227 is a deficient number, since it is larger than the sum of its proper divisors (172279733).

1161497227 is a wasteful number, since it uses less digits than its factorization.

1161497227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557433.

The product of its digits is 42336, while the sum is 40.

The square root of 1161497227 is about 34080.7456931329. The cubic root of 1161497227 is about 1051.1694383989.

The spelling of 1161497227 in words is "one billion, one hundred sixty-one million, four hundred ninety-seven thousand, two hundred twenty-seven".