1161115 has 8 divisors (see below), whose sum is σ = 1402128. Its totient is φ = 923040.

The previous prime is 1161113. The next prime is 1161137. The reversal of 1161115 is 5111611.

1161115 = T₁₀ + T₁₁ + ... + T₁₉₀.

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

It is not a de Polignac number, because 1161115 - 2¹ = 1161113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 264 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (175266).

2^1161115 is an apocalyptic number.

1161115 is a deficient number, since it is larger than the sum of its proper divisors (241013).

1161115 is a wasteful number, since it uses less digits than its factorization.

1161115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its digits is 30, while the sum is 16.

The square root of 1161115 is about 1077.5504628555. The cubic root of 1161115 is about 105.1054119018.

Adding to 1161115 its reverse (5111611), we get a palindrome (6272726).

The spelling of 1161115 in words is "one million, one hundred sixty-one thousand, one hundred fifteen".