5655540 has 144 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 1267200.

The previous prime is 5655527. The next prime is 5655541. The reversal of 5655540 is 455565.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5655498 and 5655507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137920 + ... + 137960.

It is an arithmetic number, because the mean of its divisors is an integer number (130340).

Almost surely, 2^5655540 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 5655540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9384480).

5655540 is an abundant number, since it is smaller than the sum of its proper divisors (13113420).

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

5655540 is a wasteful number, since it uses less digits than its factorization.

5655540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 5655540 is about 2378.1379270345. The cubic root of 5655540 is about 178.1659438043.

It can be divided in two parts, 565 and 5540, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 5655540 in words is "five million, six hundred fifty-five thousand, five hundred forty".