1161373 has 4 divisors (see below), whose sum is σ = 1165788. Its totient is φ = 1156960.

The previous prime is 1161371. The next prime is 1161397. The reversal of 1161373 is 3731611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3731611 = 13 ⋅287047.

It can be written as a sum of positive squares in 2 ways, for example, as 822649 + 338724 = 907^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161373 - 2¹ = 1161371 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (291447).

2^1161373 is an apocalyptic number.

It is an amenable number.

1161373 is a deficient number, since it is larger than the sum of its proper divisors (4415).

1161373 is an equidigital number, since it uses as much as digits as its factorization.

1161373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4414.

The product of its digits is 378, while the sum is 22.

The square root of 1161373 is about 1077.6701721770. The cubic root of 1161373 is about 105.1131961403.

Adding to 1161373 its reverse (3731611), we get a palindrome (4892984).

The spelling of 1161373 in words is "one million, one hundred sixty-one thousand, three hundred seventy-three".