1111345 has 4 divisors (see below), whose sum is σ = 1333620. Its totient is φ = 889072.

The previous prime is 1111339. The next prime is 1111351. The reversal of 1111345 is 5431111.

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

It is an interprime number because it is at equal distance from previous prime (1111339) and next prime (1111351).

It can be written as a sum of positive squares in 2 ways, for example, as 815409 + 295936 = 903^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111345 - 2¹⁹ = 587057 is a prime.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111130 + ... + 111139.

It is an arithmetic number, because the mean of its divisors is an integer number (333405).

2^1111345 is an apocalyptic number.

It is an amenable number.

1111345 is a deficient number, since it is larger than the sum of its proper divisors (222275).

1111345 is an equidigital number, since it uses as much as digits as its factorization.

1111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222274.

The product of its digits is 60, while the sum is 16.

The square root of 1111345 is about 1054.2034907929. The cubic root of 1111345 is about 103.5816838268.

Adding to 1111345 its reverse (5431111), we get a palindrome (6542456).

The spelling of 1111345 in words is "one million, one hundred eleven thousand, three hundred forty-five".