11857001 has 8 divisors (see below), whose sum is σ = 13010760. Its totient is φ = 10737792.

The previous prime is 11856979. The next prime is 11857003. The reversal of 11857001 is 10075811.

It can be written as a sum of positive squares in 4 ways, for example, as 960400 + 10896601 = 980^2 + 3301^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-11857001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11857003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7916 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (1626345).

Almost surely, 2^11857001 is an apocalyptic number.

It is an amenable number.

11857001 is a deficient number, since it is larger than the sum of its proper divisors (1153759).

11857001 is a wasteful number, since it uses less digits than its factorization.

11857001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17275.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 11857001 is about 3443.3996282744. The cubic root of 11857001 is about 228.0298065577.

The spelling of 11857001 in words is "eleven million, eight hundred fifty-seven thousand, one".