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52544143 = 291811867
BaseRepresentation
bin1100100001110…
…0001010001111
310122212112000101
43020130022033
5101422403033
65114111531
71205421631
oct310341217
9118775011
1052544143
1127729213
121571b5a7
13ab69412
146d9aa51
15492d97d
hex321c28f

52544143 has 4 divisors (see below), whose sum is σ = 54356040. Its totient is φ = 50732248.

The previous prime is 52544123. The next prime is 52544179. The reversal of 52544143 is 34144525.

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 52544143 - 217 = 52413071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52544123) 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, 905905 + ... + 905962.

It is an arithmetic number, because the mean of its divisors is an integer number (13589010).

Almost surely, 252544143 is an apocalyptic number.

52544143 is a deficient number, since it is larger than the sum of its proper divisors (1811897).

52544143 is a wasteful number, since it uses less digits than its factorization.

52544143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811896.

The product of its digits is 9600, while the sum is 28.

The square root of 52544143 is about 7248.7338894458. The cubic root of 52544143 is about 374.5485364035.

Adding to 52544143 its reverse (34144525), we get a palindrome (86688668).

The spelling of 52544143 in words is "fifty-two million, five hundred forty-four thousand, one hundred forty-three".

Divisors: 1 29 1811867 52544143