56017665 has 24 divisors (see below), whose sum is σ = 105925248. Its totient is φ = 27159840.

The previous prime is 56017657. The next prime is 56017679. The reversal of 56017665 is 56671065.

It is a happy number.

It is not a de Polignac number, because 56017665 - 2³ = 56017657 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 56089 + ... + 57078.

It is an arithmetic number, because the mean of its divisors is an integer number (4413552).

Almost surely, 2^56017665 is an apocalyptic number.

56017665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56017665 is a deficient number, since it is larger than the sum of its proper divisors (49907583).

56017665 is a wasteful number, since it uses less digits than its factorization.

56017665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113189 (or 113186 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 56017665 is about 7484.4949729424. The cubic root of 56017665 is about 382.6264608126.

It can be divided in two parts, 560 and 17665, that added together give a square (18225 = 135²).

The spelling of 56017665 in words is "fifty-six million, seventeen thousand, six hundred sixty-five".