1103945 has 4 divisors (see below), whose sum is σ = 1324740. Its totient is φ = 883152.

The previous prime is 1103933. The next prime is 1103981. The reversal of 1103945 is 5493011.

It is a happy number.

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 657721 + 446224 = 811^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103945 - 2¹⁰ = 1102921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1103945.

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, 110390 + ... + 110399.

It is an arithmetic number, because the mean of its divisors is an integer number (331185).

2^1103945 is an apocalyptic number.

It is an amenable number.

1103945 is a deficient number, since it is larger than the sum of its proper divisors (220795).

1103945 is an equidigital number, since it uses as much as digits as its factorization.

1103945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220794.

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

The square root of 1103945 is about 1050.6878699214. The cubic root of 1103945 is about 103.3512687101.

Adding to 1103945 its reverse (5493011), we get a palindrome (6596956).

It can be divided in two parts, 1103 and 945, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1103945 in words is "one million, one hundred three thousand, nine hundred forty-five".