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54445 = 510889
BaseRepresentation
bin1101010010101101
32202200111
431102231
53220240
61100021
7314506
oct152255
982614
1054445
11379a6
1227611
131ba21
1415bad
15111ea
hexd4ad

54445 has 4 divisors (see below), whose sum is σ = 65340. Its totient is φ = 43552.

The previous prime is 54443. The next prime is 54449.

54445 is nontrivially palindromic in base 10.

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 8649 + 45796 = 93^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 54445 - 21 = 54443 is a prime.

54445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5440 + ... + 5449.

It is an arithmetic number, because the mean of its divisors is an integer number (16335).

254445 is an apocalyptic number.

It is an amenable number.

54445 is a deficient number, since it is larger than the sum of its proper divisors (10895).

54445 is a wasteful number, since it uses less digits than its factorization.

54445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10894.

The product of its digits is 1600, while the sum is 22.

The square root of 54445 is about 233.3345238065. The cubic root of 54445 is about 37.9011744194.

The spelling of 54445 in words is "fifty-four thousand, four hundred forty-five".

Divisors: 1 5 10889 54445