1161015 has 32 divisors (see below), whose sum is σ = 2047680. Its totient is φ = 559104.

The previous prime is 1161011. The next prime is 1161031. The reversal of 1161015 is 5101611.

It is not a de Polignac number, because 1161015 - 2² = 1161011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1160985 and 1161003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161011) 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 31 ways as a sum of consecutive naturals, for example, 7317 + ... + 7473.

It is an arithmetic number, because the mean of its divisors is an integer number (63990).

2^1161015 is an apocalyptic number.

1161015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1161015 is a deficient number, since it is larger than the sum of its proper divisors (886665).

1161015 is a wasteful number, since it uses less digits than its factorization.

1161015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1161015 is about 1077.5040603172. The cubic root of 1161015 is about 105.1023944451.

Adding to 1161015 its reverse (5101611), we get a palindrome (6262626).

The spelling of 1161015 in words is "one million, one hundred sixty-one thousand, fifteen".