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52728253 = 63183563
BaseRepresentation
bin1100100100100…
…1000110111101
310200012212120021
43021021012331
5101444301003
65122052141
71210116454
oct311110675
9120185507
1052728253
1127844576
12157aa051
13ac02166
147007b9b
1549682bd
hex32491bd

52728253 has 4 divisors (see below), whose sum is σ = 52812448. Its totient is φ = 52644060.

The previous prime is 52728251. The next prime is 52728257. The reversal of 52728253 is 35282725.

52728253 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52728253 - 21 = 52728251 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 (52728251) 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, 41151 + ... + 42412.

It is an arithmetic number, because the mean of its divisors is an integer number (13203112).

Almost surely, 252728253 is an apocalyptic number.

It is an amenable number.

52728253 is a deficient number, since it is larger than the sum of its proper divisors (84195).

52728253 is an equidigital number, since it uses as much as digits as its factorization.

52728253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84194.

The product of its digits is 33600, while the sum is 34.

The square root of 52728253 is about 7261.4222436104. The cubic root of 52728253 is about 374.9854880310.

The spelling of 52728253 in words is "fifty-two million, seven hundred twenty-eight thousand, two hundred fifty-three".

Divisors: 1 631 83563 52728253