11285641 has 4 divisors (see below), whose sum is σ = 11329812. Its totient is φ = 11241472.

The previous prime is 11285633. The next prime is 11285647. The reversal of 11285641 is 14658211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 1071225 = 3196^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 11285641 - 2³ = 11285633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11285647) 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, 21700 + ... + 22213.

It is an arithmetic number, because the mean of its divisors is an integer number (2832453).

Almost surely, 2^11285641 is an apocalyptic number.

It is an amenable number.

11285641 is a deficient number, since it is larger than the sum of its proper divisors (44171).

11285641 is an equidigital number, since it uses as much as digits as its factorization.

11285641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44170.

The product of its digits is 1920, while the sum is 28.

The square root of 11285641 is about 3359.4108114370. The cubic root of 11285641 is about 224.3066126937.

The spelling of 11285641 in words is "eleven million, two hundred eighty-five thousand, six hundred forty-one".