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1055230205 = 51723353281
BaseRepresentation
bin111110111001011…
…000100011111101
32201112121020201012
4332321120203331
54130114331310
6252413125005
735102210621
oct7671304375
92645536635
101055230205
114a1717087
12255489765
1313a807093
14a0207181
1562990c05
hex3ee588fd

1055230205 has 16 divisors (see below), whose sum is σ = 1346542704. Its totient is φ = 791101440.

The previous prime is 1055230193. The next prime is 1055230213. The reversal of 1055230205 is 5020325501.

It can be written as a sum of positive squares in 8 ways, for example, as 4044121 + 1051186084 = 2011^2 + 32422^2 .

It is a de Polignac number, because none of the positive numbers 2k-1055230205 is a prime.

It is a super-2 number, since 2×10552302052 = 2227021571088684050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 6836 + ... + 46445.

It is an arithmetic number, because the mean of its divisors is an integer number (84158919).

Almost surely, 21055230205 is an apocalyptic number.

It is an amenable number.

1055230205 is a deficient number, since it is larger than the sum of its proper divisors (291312499).

1055230205 is a wasteful number, since it uses less digits than its factorization.

1055230205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53536.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1055230205 is about 32484.3070574085. The cubic root of 1055230205 is about 1018.0811692348.

Adding to 1055230205 its reverse (5020325501), we get a palindrome (6075555706).

The spelling of 1055230205 in words is "one billion, fifty-five million, two hundred thirty thousand, two hundred five".

Divisors: 1 5 17 85 233 1165 3961 19805 53281 266405 905777 4528885 12414473 62072365 211046041 1055230205