1361156 has 24 divisors (see below), whose sum is σ = 2595096. Its totient is φ = 622080.

The previous prime is 1361153. The next prime is 1361183. The reversal of 1361156 is 6511631.

1361156 = 51² + 52² + ... + 161².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 586756 + 774400 = 766^2 + 880^2 .

It is not an unprimeable number, because it can be changed into a prime (1361153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2246 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (108129).

2^1361156 is an apocalyptic number.

It is an amenable number.

1361156 is a deficient number, since it is larger than the sum of its proper divisors (1233940).

1361156 is a wasteful number, since it uses less digits than its factorization.

1361156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

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

The square root of 1361156 is about 1166.6859046033. The cubic root of 1361156 is about 110.8245476418.

Adding to 1361156 its reverse (6511631), we get a palindrome (7872787).

The spelling of 1361156 in words is "one million, three hundred sixty-one thousand, one hundred fifty-six".