56885587 has 16 divisors (see below), whose sum is σ = 66344832. Its totient is φ = 48200320.

The previous prime is 56885581. The next prime is 56885593. The reversal of 56885587 is 78558865.

It is an interprime number because it is at equal distance from previous prime (56885581) and next prime (56885593).

It is a cyclic number.

It is not a de Polignac number, because 56885587 - 2¹⁹ = 56361299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56885581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18588 + ... + 21430.

It is an arithmetic number, because the mean of its divisors is an integer number (4146552).

Almost surely, 2^56885587 is an apocalyptic number.

56885587 is a deficient number, since it is larger than the sum of its proper divisors (9459245).

56885587 is a wasteful number, since it uses less digits than its factorization.

56885587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its digits is 2688000, while the sum is 52.

The square root of 56885587 is about 7542.2534431031. The cubic root of 56885587 is about 384.5924444154.

The spelling of 56885587 in words is "fifty-six million, eight hundred eighty-five thousand, five hundred eighty-seven".