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52630605 = 3251378537
BaseRepresentation
bin1100100011000…
…1010001001101
310200000220121200
43020301101031
5101433134410
65120020113
71206231666
oct310612115
9120026550
1052630605
1127788175
1215761639
13ab99891
146dc036d
1549493c0
hex323144d

52630605 has 24 divisors (see below), whose sum is σ = 91903032. Its totient is φ = 27861504.

The previous prime is 52630583. The next prime is 52630607. The reversal of 52630605 is 50603625.

52630605 is a `hidden beast` number, since 5 + 26 + 30 + 605 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16016004 + 36614601 = 4002^2 + 6051^2 .

It is not a de Polignac number, because 52630605 - 25 = 52630573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52630607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1897 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (3829293).

Almost surely, 252630605 is an apocalyptic number.

It is an amenable number.

52630605 is a deficient number, since it is larger than the sum of its proper divisors (39272427).

52630605 is a wasteful number, since it uses less digits than its factorization.

52630605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685 (or 8682 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 52630605 is about 7254.6953760995. The cubic root of 52630605 is about 374.7538651490.

It can be divided in two parts, 52630 and 605, that added together give a palindrome (53235).

The spelling of 52630605 in words is "fifty-two million, six hundred thirty thousand, six hundred five".

Divisors: 1 3 5 9 15 45 137 411 685 1233 2055 6165 8537 25611 42685 76833 128055 384165 1169569 3508707 5847845 10526121 17543535 52630605