11153540 has 24 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 4407008.

The previous prime is 11153533. The next prime is 11153563. The reversal of 11153540 is 4535111.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1700 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^11153540 is an apocalyptic number.

11153540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11153540 is an abundant number, since it is smaller than the sum of its proper divisors (12554620).

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

11153540 is a wasteful number, since it uses less digits than its factorization.

11153540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811 (or 6809 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 11153540 is about 3339.6916025286. The cubic root of 11153540 is about 223.4279888856.

Adding to 11153540 its reverse (4535111), we get a palindrome (15688651).

The spelling of 11153540 in words is "eleven million, one hundred fifty-three thousand, five hundred forty".