11550643 has 12 divisors (see below), whose sum is σ = 12820248. Its totient is φ = 10395840.

The previous prime is 11550641. The next prime is 11550653. The reversal of 11550643 is 34605511.

It is not a de Polignac number, because 11550643 - 2¹ = 11550641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6096 + ... + 7762.

It is an arithmetic number, because the mean of its divisors is an integer number (1068354).

Almost surely, 2^11550643 is an apocalyptic number.

11550643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11550643 is a deficient number, since it is larger than the sum of its proper divisors (1269605).

11550643 is a wasteful number, since it uses less digits than its factorization.

11550643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 11550643 is about 3398.6236920259. The cubic root of 11550643 is about 226.0487207984.

The spelling of 11550643 in words is "eleven million, five hundred fifty thousand, six hundred forty-three".