56005565 has 64 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 31933440.

The previous prime is 56005541. The next prime is 56005567. The reversal of 56005565 is 56550065.

It is a de Polignac number, because none of the positive numbers 2^k-56005565 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56005567) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 281336 + ... + 281534.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^56005565 is an apocalyptic number.

56005565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56005565 is a deficient number, since it is larger than the sum of its proper divisors (35232835).

56005565 is a wasteful number, since it uses less digits than its factorization.

56005565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 56005565 is about 7483.6865915136. The cubic root of 56005565 is about 382.5989093038.

The spelling of 56005565 in words is "fifty-six million, five thousand, five hundred sixty-five".