56151565 has 4 divisors (see below), whose sum is σ = 67381884. Its totient is φ = 44921248.

The previous prime is 56151559. The next prime is 56151577. The reversal of 56151565 is 56515165.

56151565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7123561 + 49028004 = 2669^2 + 7002^2 .

It is a cyclic number.

It is not a de Polignac number, because 56151565 - 2¹⁹ = 55627277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56151565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5615152 + ... + 5615161.

It is an arithmetic number, because the mean of its divisors is an integer number (16845471).

Almost surely, 2^56151565 is an apocalyptic number.

It is an amenable number.

56151565 is a deficient number, since it is larger than the sum of its proper divisors (11230319).

56151565 is a wasteful number, since it uses less digits than its factorization.

56151565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11230318.

The product of its digits is 22500, while the sum is 34.

The square root of 56151565 is about 7493.4347932040. The cubic root of 56151565 is about 382.9310844561.

The spelling of 56151565 in words is "fifty-six million, one hundred fifty-one thousand, five hundred sixty-five".