56005567 has 2 divisors, whose sum is σ = 56005568. Its totient is φ = 56005566.

The previous prime is 56005541. The next prime is 56005571. The reversal of 56005567 is 76550065.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56005567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56005867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28002783 + 28002784.

It is an arithmetic number, because the mean of its divisors is an integer number (28002784).

Almost surely, 2^56005567 is an apocalyptic number.

56005567 is a deficient number, since it is larger than the sum of its proper divisors (1).

56005567 is an equidigital number, since it uses as much as digits as its factorization.

56005567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 56005567 is about 7483.6867251376. The cubic root of 56005567 is about 382.5989138581.

The spelling of 56005567 in words is "fifty-six million, five thousand, five hundred sixty-seven".