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172230521887 is a prime number
BaseRepresentation
bin1010000001100110111…
…1010011010000011111
3121110120001010000221001
42200121233103100133
510310212003200022
6211042133451131
715305014165264
oct2403157232037
9543501100831
10172230521887
1167051704296
12294677a0aa7
131331a0b4118
14849bdbb26b
154730595b27
hex2819bd341f

172230521887 has 2 divisors, whose sum is σ = 172230521888. Its totient is φ = 172230521886.

The previous prime is 172230521861. The next prime is 172230521971. The reversal of 172230521887 is 788125032271.

172230521887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172230521887 - 27 = 172230521759 is a prime.

It is a super-3 number, since 3×1722305218873 (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172230522887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86115260943 + 86115260944.

It is an arithmetic number, because the mean of its divisors is an integer number (86115260944).

Almost surely, 2172230521887 is an apocalyptic number.

172230521887 is a deficient number, since it is larger than the sum of its proper divisors (1).

172230521887 is an equidigital number, since it uses as much as digits as its factorization.

172230521887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 172230521887 in words is "one hundred seventy-two billion, two hundred thirty million, five hundred twenty-one thousand, eight hundred eighty-seven".