1161045 has 12 divisors (see below), whose sum is σ = 2012556. Its totient is φ = 619200.

The previous prime is 1161037. The next prime is 1161047. The reversal of 1161045 is 5401611.

1161045 is a `hidden beast` number, since 11 + 610 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 651249 = 714^2 + 807^2 .

It is not a de Polignac number, because 1161045 - 2³ = 1161037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12856 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (167713).

2^1161045 is an apocalyptic number.

1161045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161045 is a deficient number, since it is larger than the sum of its proper divisors (851511).

1161045 is a wasteful number, since it uses less digits than its factorization.

1161045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812 (or 25809 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1161045 is about 1077.5179812885. The cubic root of 1161045 is about 105.1032997003.

Adding to 1161045 its reverse (5401611), we get a palindrome (6562656).

The spelling of 1161045 in words is "one million, one hundred sixty-one thousand, forty-five".