5511540 has 48 divisors (see below), whose sum is σ = 15607872. Its totient is φ = 1453056.

The previous prime is 5511529. The next prime is 5511547. The reversal of 5511540 is 451155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511547) 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, 5347 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (325164).

Almost surely, 2^5511540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5511540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7803936).

5511540 is an abundant number, since it is smaller than the sum of its proper divisors (10096332).

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

5511540 is a wasteful number, since it uses less digits than its factorization.

5511540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

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

The square root of 5511540 is about 2347.6669269724. Note that the first 3 decimals coincide. The cubic root of 5511540 is about 176.6407857345.

Adding to 5511540 its reverse (451155), we get a palindrome (5962695).

It can be divided in two parts, 55115 and 40, that added together give a palindrome (55155).

The spelling of 5511540 in words is "five million, five hundred eleven thousand, five hundred forty".