1103261 has 4 divisors (see below), whose sum is σ = 1111452. Its totient is φ = 1095072.

The previous prime is 1103257. The next prime is 1103279. The reversal of 1103261 is 1623011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1623011 = 13 ⋅124847.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 348100 = 869^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103261 - 2² = 1103257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103281) 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, 3890 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (277863).

2^1103261 is an apocalyptic number.

It is an amenable number.

1103261 is a deficient number, since it is larger than the sum of its proper divisors (8191).

1103261 is an equidigital number, since it uses as much as digits as its factorization.

1103261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8190.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1103261 is about 1050.3623184406. The cubic root of 1103261 is about 103.3299189530.

Adding to 1103261 its reverse (1623011), we get a palindrome (2726272).

The spelling of 1103261 in words is "one million, one hundred three thousand, two hundred sixty-one".