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54143623 = 173184919
BaseRepresentation
bin1100111010001…
…0101010000111
310202212210002101
43032202222013
5102330043443
65212252531
71225133062
oct316425207
9122783071
1054143623
11286209a6
1216171147
13b2a9461
1472958d9
154b4784d
hex33a2a87

54143623 has 4 divisors (see below), whose sum is σ = 57328560. Its totient is φ = 50958688.

The previous prime is 54143603. The next prime is 54143627. The reversal of 54143623 is 32634145.

54143623 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 is a cyclic number.

It is not a de Polignac number, because 54143623 - 25 = 54143591 is a prime.

It is a super-2 number, since 2×541436232 = 5863063823132258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54143591 and 54143600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54143627) by changing a digit.

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, 1592443 + ... + 1592476.

It is an arithmetic number, because the mean of its divisors is an integer number (14332140).

Almost surely, 254143623 is an apocalyptic number.

54143623 is a deficient number, since it is larger than the sum of its proper divisors (3184937).

54143623 is a wasteful number, since it uses less digits than its factorization.

54143623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184936.

The product of its digits is 8640, while the sum is 28.

The square root of 54143623 is about 7358.2350465312. The cubic root of 54143623 is about 378.3111176555.

Adding to 54143623 its reverse (32634145), we get a palindrome (86777768).

The spelling of 54143623 in words is "fifty-four million, one hundred forty-three thousand, six hundred twenty-three".

Divisors: 1 17 3184919 54143623