1164261 has 8 divisors (see below), whose sum is σ = 1774144. Its totient is φ = 665280.

The previous prime is 1164253. The next prime is 1164287. The reversal of 1164261 is 1624611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1164261 - 2³ = 1164253 is a prime.

It is a super-2 number, since 2×1164261² = 2711007352242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 55441 = 1164261 / (1 + 1 + 6 + 4 + 2 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164221) 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 7 ways as a sum of consecutive naturals, for example, 27700 + ... + 27741.

It is an arithmetic number, because the mean of its divisors is an integer number (221768).

2^1164261 is an apocalyptic number.

It is an amenable number.

1164261 is a deficient number, since it is larger than the sum of its proper divisors (609883).

1164261 is an equidigital number, since it uses as much as digits as its factorization.

1164261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55451.

The product of its digits is 288, while the sum is 21.

The square root of 1164261 is about 1079.0092678008. The cubic root of 1164261 is about 105.2002527620.

Adding to 1164261 its reverse (1624611), we get a palindrome (2788872).

The spelling of 1164261 in words is "one million, one hundred sixty-four thousand, two hundred sixty-one".