11215859 has 4 divisors (see below), whose sum is σ = 11233104. Its totient is φ = 11198616.

The previous prime is 11215829. The next prime is 11215889. The reversal of 11215859 is 95851211.

11215859 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (11215829) and next prime (11215889).

It is a cyclic number.

It is not a de Polignac number, because 11215859 - 2¹² = 11211763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11215829) 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, 7607 + ... + 8960.

It is an arithmetic number, because the mean of its divisors is an integer number (2808276).

Almost surely, 2^11215859 is an apocalyptic number.

11215859 is a deficient number, since it is larger than the sum of its proper divisors (17245).

11215859 is an equidigital number, since it uses as much as digits as its factorization.

11215859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17244.

The product of its digits is 3600, while the sum is 32.

The square root of 11215859 is about 3349.0086592901. The cubic root of 11215859 is about 223.8433415159.

The spelling of 11215859 in words is "eleven million, two hundred fifteen thousand, eight hundred fifty-nine".