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52387221719 = 731183239999
BaseRepresentation
bin110000110010100001…
…011001000011010111
312000012221210121012002
4300302201121003113
51324242112043334
640022155545515
73533130015560
oct606241310327
9160187717162
1052387221719
1120243248068
12a1a045b29b
134c2b503361
14276d7c5167
151569244b7e
hexc328590d7

52387221719 has 8 divisors (see below), whose sum is σ = 59873280000. Its totient is φ = 44901705816.

The previous prime is 52387221707. The next prime is 52387221727. The reversal of 52387221719 is 91712278325.

It is a happy number.

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-52387221719 is a prime.

It is a super-2 number, since 2×523872217192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52387221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98282 + ... + 338280.

It is an arithmetic number, because the mean of its divisors is an integer number (7484160000).

Almost surely, 252387221719 is an apocalyptic number.

52387221719 is a deficient number, since it is larger than the sum of its proper divisors (7486058281).

52387221719 is a wasteful number, since it uses less digits than its factorization.

52387221719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271189.

The product of its digits is 423360, while the sum is 47.

The spelling of 52387221719 in words is "fifty-two billion, three hundred eighty-seven million, two hundred twenty-one thousand, seven hundred nineteen".

Divisors: 1 7 31183 218281 239999 1679993 7483888817 52387221719