56987727 has 4 divisors (see below), whose sum is σ = 75983640. Its totient is φ = 37991816.

The previous prime is 56987713. The next prime is 56987741. The reversal of 56987727 is 72778965.

56987727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56987713) and next prime (56987741).

It is a cyclic number.

It is not a de Polignac number, because 56987727 - 2¹¹ = 56985679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56987727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56987747) 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 3 ways as a sum of consecutive naturals, for example, 9497952 + ... + 9497957.

It is an arithmetic number, because the mean of its divisors is an integer number (18995910).

Almost surely, 2^56987727 is an apocalyptic number.

56987727 is a deficient number, since it is larger than the sum of its proper divisors (18995913).

56987727 is a wasteful number, since it uses less digits than its factorization.

56987727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18995912.

The product of its digits is 1481760, while the sum is 51.

The square root of 56987727 is about 7549.0215922330. The cubic root of 56987727 is about 384.8224897097.

The spelling of 56987727 in words is "fifty-six million, nine hundred eighty-seven thousand, seven hundred twenty-seven".