5565978 has 24 divisors (see below), whose sum is σ = 13156416. Its totient is φ = 1686600.

The previous prime is 5565913. The next prime is 5565979. The reversal of 5565978 is 8795655.

5565978 is a `hidden beast` number, since 5 + 56 + 597 + 8 = 666.

It is a super-2 number, since 2×5565978² = 61960222192968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5565979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13858 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (548184).

Almost surely, 2^5565978 is an apocalyptic number.

5565978 is an abundant number, since it is smaller than the sum of its proper divisors (7590438).

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

5565978 is a wasteful number, since it uses less digits than its factorization.

5565978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28130 (or 28127 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 5565978 is about 2359.2325023193. The cubic root of 5565978 is about 177.2204473413.

The spelling of 5565978 in words is "five million, five hundred sixty-five thousand, nine hundred seventy-eight".