1161057056 has 12 divisors (see below), whose sum is σ = 2285831142. Its totient is φ = 580528512.

The previous prime is 1161057019. The next prime is 1161057059. The reversal of 1161057056 is 6507501611.

It can be written as a sum of positive squares in only one way, i.e., 906973456 + 254083600 = 30116^2 + 15940^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 36283033 = 1161057056 / (1 + 1 + 6 + 1 + 0 + 5 + 7 + 0 + 5 + 6).

It is not an unprimeable number, because it can be changed into a prime (1161057059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18141485 + ... + 18141548.

Almost surely, 2^1161057056 is an apocalyptic number.

1161057056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161057056 is a deficient number, since it is larger than the sum of its proper divisors (1124774086).

1161057056 is an equidigital number, since it uses as much as digits as its factorization.

1161057056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36283043 (or 36283035 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1161057056 is about 34074.2873146307. The cubic root of 1161057056 is about 1051.0366348779.

Adding to 1161057056 its reverse (6507501611), we get a palindrome (7668558667).

The spelling of 1161057056 in words is "one billion, one hundred sixty-one million, fifty-seven thousand, fifty-six".