11261641 has 4 divisors (see below), whose sum is σ = 11342800. Its totient is φ = 11180484.

The previous prime is 11261629. The next prime is 11261659. The reversal of 11261641 is 14616211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14616211 = 113 ⋅129347.

It is a cyclic number.

It is not a de Polignac number, because 11261641 - 2¹³ = 11253449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261611) 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, 40371 + ... + 40648.

It is an arithmetic number, because the mean of its divisors is an integer number (2835700).

Almost surely, 2^11261641 is an apocalyptic number.

It is an amenable number.

11261641 is a deficient number, since it is larger than the sum of its proper divisors (81159).

11261641 is an equidigital number, since it uses as much as digits as its factorization.

11261641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81158.

The product of its digits is 288, while the sum is 22.

The square root of 11261641 is about 3355.8368553909. The cubic root of 11261641 is about 224.1474966601.

Adding to 11261641 its reverse (14616211), we get a palindrome (25877852).

The spelling of 11261641 in words is "eleven million, two hundred sixty-one thousand, six hundred forty-one".