11261765 has 4 divisors (see below), whose sum is σ = 13514124. Its totient is φ = 9009408.

The previous prime is 11261749. The next prime is 11261779. The reversal of 11261765 is 56716211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56716211 = 251 ⋅225961.

It can be written as a sum of positive squares in 2 ways, for example, as 3247204 + 8014561 = 1802^2 + 2831^2 .

It is a cyclic number.

It is not a de Polignac number, because 11261765 - 2⁴ = 11261749 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1126172 + ... + 1126181.

It is an arithmetic number, because the mean of its divisors is an integer number (3378531).

Almost surely, 2^11261765 is an apocalyptic number.

It is an amenable number.

11261765 is a deficient number, since it is larger than the sum of its proper divisors (2252359).

11261765 is an equidigital number, since it uses as much as digits as its factorization.

11261765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252358.

The product of its digits is 2520, while the sum is 29.

The square root of 11261765 is about 3355.8553306125. The cubic root of 11261765 is about 224.1483193403.

Adding to 11261765 its reverse (56716211), we get a palindrome (67977976).

The spelling of 11261765 in words is "eleven million, two hundred sixty-one thousand, seven hundred sixty-five".