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52131307 = 1911324281
BaseRepresentation
bin1100011011011…
…1010111101011
310122002112201011
43012313113223
5101321200212
65101204351
71202052214
oct306672753
9118075634
1052131307
1127477028
12155606b7
13aa53537
146cd040b
15489b4a7
hex31b75eb

52131307 has 8 divisors (see below), whose sum is σ = 55362960. Its totient is φ = 48948480.

The previous prime is 52131283. The next prime is 52131311. The reversal of 52131307 is 70313125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52131307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52131337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9994 + ... + 14287.

It is an arithmetic number, because the mean of its divisors is an integer number (6920370).

Almost surely, 252131307 is an apocalyptic number.

52131307 is a deficient number, since it is larger than the sum of its proper divisors (3231653).

52131307 is a wasteful number, since it uses less digits than its factorization.

52131307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24413.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 52131307 is about 7220.2013129829. The cubic root of 52131307 is about 373.5650213826.

It can be divided in two parts, 5 and 2131307, that added together give a palindrome (2131312).

The spelling of 52131307 in words is "fifty-two million, one hundred thirty-one thousand, three hundred seven".

Divisors: 1 19 113 2147 24281 461339 2743753 52131307