56011565 has 8 divisors (see below), whose sum is σ = 67350528. Its totient is φ = 44718160.

The previous prime is 56011561. The next prime is 56011567. The reversal of 56011565 is 56511065.

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

It is not a de Polignac number, because 56011565 - 2² = 56011561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56011561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8621 + ... + 13650.

It is an arithmetic number, because the mean of its divisors is an integer number (8418816).

Almost surely, 2^56011565 is an apocalyptic number.

It is an amenable number.

56011565 is a deficient number, since it is larger than the sum of its proper divisors (11338963).

56011565 is a wasteful number, since it uses less digits than its factorization.

56011565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22779.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 56011565 is about 7484.0874527226. The cubic root of 56011565 is about 382.6125717049.

Subtracting 56011565 from its reverse (56511065), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 56011565 in words is "fifty-six million, eleven thousand, five hundred sixty-five".