1161356 has 48 divisors (see below), whose sum is σ = 2553600. Its totient is φ = 451008.

The previous prime is 1161343. The next prime is 1161371. The reversal of 1161356 is 6531611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19655 + ... + 19713.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2^1161356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276800).

1161356 is an abundant number, since it is smaller than the sum of its proper divisors (1392244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161356 is a wasteful number, since it uses less digits than its factorization.

1161356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 124 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 1161356 is about 1077.6622847627. The cubic root of 1161356 is about 105.1126832608.

Adding to 1161356 its reverse (6531611), we get a palindrome (7692967).

The spelling of 1161356 in words is "one million, one hundred sixty-one thousand, three hundred fifty-six".