56236165 has 4 divisors (see below), whose sum is σ = 67483404. Its totient is φ = 44988928.

The previous prime is 56236123. The next prime is 56236199. The reversal of 56236165 is 56163265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56163265 = 5 ⋅11232653.

It can be written as a sum of positive squares in 2 ways, for example, as 44063044 + 12173121 = 6638^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 56236165 - 2¹⁵ = 56203397 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 56236165.

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 3 ways as a sum of consecutive naturals, for example, 5623612 + ... + 5623621.

It is an arithmetic number, because the mean of its divisors is an integer number (16870851).

Almost surely, 2^56236165 is an apocalyptic number.

It is an amenable number.

56236165 is a deficient number, since it is larger than the sum of its proper divisors (11247239).

56236165 is a wasteful number, since it uses less digits than its factorization.

56236165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247238.

The product of its digits is 32400, while the sum is 34.

The square root of 56236165 is about 7499.0776099464. The cubic root of 56236165 is about 383.1233006107.

Subtracting from 56236165 its reverse (56163265), we obtain a square (72900 = 270²).

The spelling of 56236165 in words is "fifty-six million, two hundred thirty-six thousand, one hundred sixty-five".