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52368139 = 54795737
BaseRepresentation
bin1100011111000…
…1001100001011
310122112120120201
43013301030023
5101401240024
65110233031
71204056535
oct307611413
9118476521
1052368139
1127618a5a
1215655777
13ab07285
146d52855
1548e6744
hex31f130b

52368139 has 4 divisors (see below), whose sum is σ = 52464424. Its totient is φ = 52271856.

The previous prime is 52368137. The next prime is 52368157. The reversal of 52368139 is 93186325.

52368139 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.

It is a cyclic number.

It is not a de Polignac number, because 52368139 - 21 = 52368137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52368098 and 52368107.

It is not an unprimeable number, because it can be changed into a prime (52368137) 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, 47322 + ... + 48415.

It is an arithmetic number, because the mean of its divisors is an integer number (13116106).

Almost surely, 252368139 is an apocalyptic number.

52368139 is a deficient number, since it is larger than the sum of its proper divisors (96285).

52368139 is an equidigital number, since it uses as much as digits as its factorization.

52368139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96284.

The product of its digits is 38880, while the sum is 37.

The square root of 52368139 is about 7236.5833789158. The cubic root of 52368139 is about 374.1298675842.

The spelling of 52368139 in words is "fifty-two million, three hundred sixty-eight thousand, one hundred thirty-nine".

Divisors: 1 547 95737 52368139