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52805053 = 77543579
BaseRepresentation
bin1100100101101…
…1110110111101
310200100202220201
43021123312331
5102004230203
65123443501
71210556410
oct311336675
9120322821
1052805053
1127897244
1215826591
13ac2b0c2
147027b77
154980e1d
hex325bdbd

52805053 has 4 divisors (see below), whose sum is σ = 60348640. Its totient is φ = 45261468.

The previous prime is 52805041. The next prime is 52805057. The reversal of 52805053 is 35050825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-52805053 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 (52805057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771783 + ... + 3771796.

It is an arithmetic number, because the mean of its divisors is an integer number (15087160).

Almost surely, 252805053 is an apocalyptic number.

It is an amenable number.

52805053 is a deficient number, since it is larger than the sum of its proper divisors (7543587).

52805053 is an equidigital number, since it uses as much as digits as its factorization.

52805053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7543586.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 52805053 is about 7266.7085396347. The cubic root of 52805053 is about 375.1674582465.

Adding to 52805053 its reverse (35050825), we get a palindrome (87855878).

The spelling of 52805053 in words is "fifty-two million, eight hundred five thousand, fifty-three".

Divisors: 1 7 7543579 52805053