56091855 has 16 divisors (see below), whose sum is σ = 89987040. Its totient is φ = 29835648.

The previous prime is 56091853. The next prime is 56091863. The reversal of 56091855 is 55819065.

It is not a de Polignac number, because 56091855 - 2¹ = 56091853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56091853) 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 in 15 ways as a sum of consecutive naturals, for example, 1029 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (5624190).

Almost surely, 2^56091855 is an apocalyptic number.

56091855 is a deficient number, since it is larger than the sum of its proper divisors (33895185).

56091855 is a wasteful number, since it uses less digits than its factorization.

56091855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 56091855 is about 7489.4495792415. The cubic root of 56091855 is about 382.7953035896.

The spelling of 56091855 in words is "fifty-six million, ninety-one thousand, eight hundred fifty-five".