56475665 has 8 divisors (see below), whose sum is σ = 68442408. Its totient is φ = 44732800.

The previous prime is 56475659. The next prime is 56475667. The reversal of 56475665 is 56657465.

It can be written as a sum of positive squares in 4 ways, for example, as 12902464 + 43573201 = 3592^2 + 6601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56475665 - 2¹⁰ = 56474641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56475667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55412 + ... + 56421.

It is an arithmetic number, because the mean of its divisors is an integer number (8555301).

Almost surely, 2^56475665 is an apocalyptic number.

It is an amenable number.

56475665 is a deficient number, since it is larger than the sum of its proper divisors (11966743).

56475665 is a wasteful number, since it uses less digits than its factorization.

56475665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111939.

The product of its digits is 756000, while the sum is 44.

The square root of 56475665 is about 7515.0292747267. The cubic root of 56475665 is about 383.6664153919. Note that the first 3 decimals are identical.

The spelling of 56475665 in words is "fifty-six million, four hundred seventy-five thousand, six hundred sixty-five".