11256001 has 4 divisors (see below), whose sum is σ = 11264452. Its totient is φ = 11247552.

The previous prime is 11255971. The next prime is 11256019. The reversal of 11256001 is 10065211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2250000 + 9006001 = 1500^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 11256001 - 2⁷ = 11255873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11256041) 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, 1740 + ... + 5053.

It is an arithmetic number, because the mean of its divisors is an integer number (2816113).

Almost surely, 2^11256001 is an apocalyptic number.

It is an amenable number.

11256001 is a deficient number, since it is larger than the sum of its proper divisors (8451).

11256001 is an equidigital number, since it uses as much as digits as its factorization.

11256001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11256001 is about 3354.9964232470. The cubic root of 11256001 is about 224.1100715938.

The spelling of 11256001 in words is "eleven million, two hundred fifty-six thousand, one".