11563215 has 8 divisors (see below), whose sum is σ = 18501168. Its totient is φ = 6167040.

The previous prime is 11563193. The next prime is 11563231. The reversal of 11563215 is 51236511.

11563215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11563215 - 2⁵ = 11563183 is a prime.

It is a super-2 number, since 2×11563215² = 267415882272450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385426 + ... + 385455.

It is an arithmetic number, because the mean of its divisors is an integer number (2312646).

Almost surely, 2^11563215 is an apocalyptic number.

11563215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11563215 is a deficient number, since it is larger than the sum of its proper divisors (6937953).

11563215 is an equidigital number, since it uses as much as digits as its factorization.

11563215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770889.

The product of its digits is 900, while the sum is 24.

The square root of 11563215 is about 3400.4727612495. The cubic root of 11563215 is about 226.1307033652.

Adding to 11563215 its reverse (51236511), we get a palindrome (62799726).

It can be divided in two parts, 1156 and 3215, that added together give a triangular number (4371 = T₉₃).

The spelling of 11563215 in words is "eleven million, five hundred sixty-three thousand, two hundred fifteen".