56781185 has 16 divisors (see below), whose sum is σ = 69455232. Its totient is φ = 44553600.

The previous prime is 56781161. The next prime is 56781191. The reversal of 56781185 is 58118765.

It is not a de Polignac number, because 56781185 - 2⁶ = 56781121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108725 + ... + 109245.

It is an arithmetic number, because the mean of its divisors is an integer number (4340952).

Almost surely, 2^56781185 is an apocalyptic number.

It is an amenable number.

56781185 is a deficient number, since it is larger than the sum of its proper divisors (12674047).

56781185 is a wasteful number, since it uses less digits than its factorization.

56781185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its digits is 67200, while the sum is 41.

The square root of 56781185 is about 7535.3291235353. The cubic root of 56781185 is about 384.3570197595.

The spelling of 56781185 in words is "fifty-six million, seven hundred eighty-one thousand, one hundred eighty-five".