56785387 has 2 divisors, whose sum is σ = 56785388. Its totient is φ = 56785386.

The previous prime is 56785373. The next prime is 56785429. The reversal of 56785387 is 78358765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56785387 - 2¹¹ = 56783339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56785387.

It is not a weakly prime, because it can be changed into another prime (56785307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28392693 + 28392694.

It is an arithmetic number, because the mean of its divisors is an integer number (28392694).

Almost surely, 2^56785387 is an apocalyptic number.

56785387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56785387 is an equidigital number, since it uses as much as digits as its factorization.

56785387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 49.

The square root of 56785387 is about 7535.6079383153. The cubic root of 56785387 is about 384.3665007661.

The spelling of 56785387 in words is "fifty-six million, seven hundred eighty-five thousand, three hundred eighty-seven".