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56445 = 355371
BaseRepresentation
bin1101110001111101
32212102120
431301331
53301240
61113153
7323364
oct156175
985376
1056445
1139454
12287b9
131c8cc
14167db
1511ad0
hexdc7d

56445 has 16 divisors (see below), whose sum is σ = 93312. Its totient is φ = 29120.

The previous prime is 56443. The next prime is 56453. The reversal of 56445 is 54465.

It is not a de Polignac number, because 56445 - 21 = 56443 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 56445.

It is not an unprimeable number, because it can be changed into a prime (56443) by changing a digit.

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, 760 + ... + 830.

It is an arithmetic number, because the mean of its divisors is an integer number (5832).

256445 is an apocalyptic number.

It is an amenable number.

56445 is a deficient number, since it is larger than the sum of its proper divisors (36867).

56445 is a wasteful number, since it uses less digits than its factorization.

56445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132.

The product of its digits is 2400, while the sum is 24.

The square root of 56445 is about 237.5815649414. The cubic root of 56445 is about 38.3596962111.

Subtracting from 56445 its product of digits (2400), we obtain a palindrome (54045).

The spelling of 56445 in words is "fifty-six thousand, four hundred forty-five".

Divisors: 1 3 5 15 53 71 159 213 265 355 795 1065 3763 11289 18815 56445