1163261 has 4 divisors (see below), whose sum is σ = 1269024. Its totient is φ = 1057500.

The previous prime is 1163257. The next prime is 1163263. The reversal of 1163261 is 1623611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1163261 - 2² = 1163257 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 (1163263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52865 + ... + 52886.

It is an arithmetic number, because the mean of its divisors is an integer number (317256).

2^1163261 is an apocalyptic number.

1163261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1163261 is a deficient number, since it is larger than the sum of its proper divisors (105763).

1163261 is a wasteful number, since it uses less digits than its factorization.

1163261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105762.

The product of its digits is 216, while the sum is 20.

The square root of 1163261 is about 1078.5457802059. The cubic root of 1163261 is about 105.1701248134.

Adding to 1163261 its reverse (1623611), we get a palindrome (2786872).

The spelling of 1163261 in words is "one million, one hundred sixty-three thousand, two hundred sixty-one".