56665115 has 8 divisors (see below), whose sum is σ = 73228848. Its totient is φ = 41844960.

The previous prime is 56665079. The next prime is 56665121. The reversal of 56665115 is 51156665.

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

It is not a de Polignac number, because 56665115 - 2¹² = 56661019 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 7 ways as a sum of consecutive naturals, for example, 435821 + ... + 435950.

It is an arithmetic number, because the mean of its divisors is an integer number (9153606).

Almost surely, 2^56665115 is an apocalyptic number.

56665115 is a deficient number, since it is larger than the sum of its proper divisors (16563733).

56665115 is a wasteful number, since it uses less digits than its factorization.

56665115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871789.

The product of its digits is 27000, while the sum is 35.

The square root of 56665115 is about 7527.6234629530. The cubic root of 56665115 is about 384.0949449652.

The spelling of 56665115 in words is "fifty-six million, six hundred sixty-five thousand, one hundred fifteen".