1161345 has 16 divisors (see below), whose sum is σ = 1874880. Its totient is φ = 613824.

The previous prime is 1161343. The next prime is 1161371. The reversal of 1161345 is 5431611.

It is not a de Polignac number, because 1161345 - 2¹ = 1161343 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1161343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1807 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

2^1161345 is an apocalyptic number.

1161345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161345 is a deficient number, since it is larger than the sum of its proper divisors (713535).

1161345 is a wasteful number, since it uses less digits than its factorization.

1161345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its digits is 360, while the sum is 21.

The square root of 1161345 is about 1077.6571811110. The cubic root of 1161345 is about 105.1123513950.

Adding to 1161345 its reverse (5431611), we get a palindrome (6592956).

The spelling of 1161345 in words is "one million, one hundred sixty-one thousand, three hundred forty-five".