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52660307 = 77522901
BaseRepresentation
bin1100100011100…
…0100001010011
310200002102100202
43020320201103
5101440112212
65120405415
71206414410
oct310704123
9120072322
1052660307
11277a8517
121577686b
13abaa25b
146dcb107
1549530c2
hex3238853

52660307 has 4 divisors (see below), whose sum is σ = 60183216. Its totient is φ = 45137400.

The previous prime is 52660291. The next prime is 52660313. The reversal of 52660307 is 70306625.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 52660307 - 24 = 52660291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52660307.

It is not an unprimeable number, because it can be changed into a prime (52660367) 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 3 ways as a sum of consecutive naturals, for example, 3761444 + ... + 3761457.

It is an arithmetic number, because the mean of its divisors is an integer number (15045804).

Almost surely, 252660307 is an apocalyptic number.

52660307 is a deficient number, since it is larger than the sum of its proper divisors (7522909).

52660307 is an equidigital number, since it uses as much as digits as its factorization.

52660307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7522908.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 52660307 is about 7256.7421753842. The cubic root of 52660307 is about 374.8243491450.

The spelling of 52660307 in words is "fifty-two million, six hundred sixty thousand, three hundred seven".

Divisors: 1 7 7522901 52660307