1115973 has 6 divisors (see below), whose sum is σ = 1611974. Its totient is φ = 743976.

The previous prime is 1115941. The next prime is 1115987. The reversal of 1115973 is 3795111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 311364 = 897^2 + 558^2 .

It is not a de Polignac number, because 1115973 - 2⁵ = 1115941 is a prime.

It is a Duffinian number.

1115973 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61990 + ... + 62007.

2^1115973 is an apocalyptic number.

It is an amenable number.

1115973 is a deficient number, since it is larger than the sum of its proper divisors (496001).

1115973 is a wasteful number, since it uses less digits than its factorization.

1115973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124003 (or 124000 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 1115973 is about 1056.3962324810. The cubic root of 1115973 is about 103.7252672452.

It can be divided in two parts, 111 and 5973, that added together give a square (6084 = 78²).

The spelling of 1115973 in words is "one million, one hundred fifteen thousand, nine hundred seventy-three".