1151321 has 4 divisors (see below), whose sum is σ = 1179444. Its totient is φ = 1123200.

The previous prime is 1151317. The next prime is 1151327. The reversal of 1151321 is 1231511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151321 + 1000000 = 389^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151321 - 2² = 1151317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151296 and 1151305.

It is not an unprimeable number, because it can be changed into a prime (1151327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14000 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (294861).

2^1151321 is an apocalyptic number.

It is an amenable number.

1151321 is a deficient number, since it is larger than the sum of its proper divisors (28123).

1151321 is an equidigital number, since it uses as much as digits as its factorization.

1151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28122.

The product of its digits is 30, while the sum is 14.

The square root of 1151321 is about 1072.9962721277. The cubic root of 1151321 is about 104.8090558478.

Adding to 1151321 its reverse (1231511), we get a palindrome (2382832).

The spelling of 1151321 in words is "one million, one hundred fifty-one thousand, three hundred twenty-one".