5645540 has 24 divisors (see below), whose sum is σ = 11901120. Its totient is φ = 2249568.

The previous prime is 5645539. The next prime is 5645551. The reversal of 5645540 is 455465.

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, 8459 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (495880).

Almost surely, 2^5645540 is an apocalyptic number.

It is an amenable number.

5645540 is an abundant number, since it is smaller than the sum of its proper divisors (6255580).

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

5645540 is a wasteful number, since it uses less digits than its factorization.

5645540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 5645540 is about 2376.0345115339. The cubic root of 5645540 is about 178.0608721656.

The spelling of 5645540 in words is "five million, six hundred forty-five thousand, five hundred forty".