56635565 has 16 divisors (see below), whose sum is σ = 78049920. Its totient is φ = 38646720.

The previous prime is 56635559. The next prime is 56635571. The reversal of 56635565 is 56553665.

It is an interprime number because it is at equal distance from previous prime (56635559) and next prime (56635571).

It is not a de Polignac number, because 56635565 - 2¹⁰ = 56634541 is a prime.

It is a congruent 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, 3551 + ... + 11219.

It is an arithmetic number, because the mean of its divisors is an integer number (4878120).

Almost surely, 2^56635565 is an apocalyptic number.

It is an amenable number.

56635565 is a deficient number, since it is larger than the sum of its proper divisors (21414355).

56635565 is a wasteful number, since it uses less digits than its factorization.

56635565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892.

The product of its digits is 405000, while the sum is 41.

The square root of 56635565 is about 7525.6604361345. The cubic root of 56635565 is about 384.0281667888.

The spelling of 56635565 in words is "fifty-six million, six hundred thirty-five thousand, five hundred sixty-five".