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52680481 = 77525783
BaseRepresentation
bin1100100011110…
…1011100100001
310200010110000221
43020331130201
5101441233411
65121043041
71206530260
oct310753441
9120113027
1052680481
1127811697
1215786481
13abb64a9
146dd45d7
154959071
hex323d721

52680481 has 4 divisors (see below), whose sum is σ = 60206272. Its totient is φ = 45154692.

The previous prime is 52680479. The next prime is 52680491. The reversal of 52680481 is 18408625.

52680481 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 52680481 - 21 = 52680479 is a prime.

It is a super-2 number, since 2×526804812 = 5550466156782722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52680491) 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, 3762885 + ... + 3762898.

It is an arithmetic number, because the mean of its divisors is an integer number (15051568).

Almost surely, 252680481 is an apocalyptic number.

It is an amenable number.

52680481 is a deficient number, since it is larger than the sum of its proper divisors (7525791).

52680481 is an equidigital number, since it uses as much as digits as its factorization.

52680481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525790.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 52680481 is about 7258.1320599725. The cubic root of 52680481 is about 374.8722077152.

The spelling of 52680481 in words is "fifty-two million, six hundred eighty thousand, four hundred eighty-one".

Divisors: 1 7 7525783 52680481