11550540 has 48 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 3065280.

The previous prime is 11550527. The next prime is 11550541. The reversal of 11550540 is 4505511.

11550540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11550541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18351 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (677040).

Almost surely, 2^11550540 is an apocalyptic number.

11550540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11550540 is an abundant number, since it is smaller than the sum of its proper divisors (20947380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11550540 is a wasteful number, since it uses less digits than its factorization.

11550540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 11550540 is about 3398.6085387994. The cubic root of 11550540 is about 226.0480488853.

It can be divided in two parts, 11550 and 540, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 11550540 in words is "eleven million, five hundred fifty thousand, five hundred forty".