11550385 has 32 divisors (see below), whose sum is σ = 18201600. Its totient is φ = 6816960.

The previous prime is 11550379. The next prime is 11550419. The reversal of 11550385 is 58305511.

11550385 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11550385 - 2⁹ = 11549873 is a prime.

It is a super-2 number, since 2×11550385² = 266822787296450, which contains 22 as substring.

11550385 is strictly pandigital in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6526 + ... + 8104.

It is an arithmetic number, because the mean of its divisors is an integer number (568800).

Almost surely, 2^11550385 is an apocalyptic number.

It is an amenable number.

11550385 is a deficient number, since it is larger than the sum of its proper divisors (6651215).

11550385 is a wasteful number, since it uses less digits than its factorization.

11550385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 11550385 is about 3398.5857352728. The cubic root of 11550385 is about 226.0470377463.

Adding to 11550385 its reverse (58305511), we get a palindrome (69855896).

It can be divided in two parts, 11550 and 385, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11550385 in words is "eleven million, five hundred fifty thousand, three hundred eighty-five".