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212524919 is a prime number
BaseRepresentation
bin11001010101011…
…01111101110111
3112210220101101022
430222231331313
5413401244134
633031051355
75160301115
oct1452557567
9483811338
10212524919
11a9a68132
125b210b5b
13350511b9
1420322ab5
15139d052e
hexcaadf77

212524919 has 2 divisors, whose sum is σ = 212524920. Its totient is φ = 212524918.

The previous prime is 212524889. The next prime is 212524943. The reversal of 212524919 is 919425212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212524919 - 216 = 212459383 is a prime.

It is a super-7 number, since 7×2125249197 (a number of 60 digits) contains 7777777 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212524999) 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, 106262459 + 106262460.

It is an arithmetic number, because the mean of its divisors is an integer number (106262460).

Almost surely, 2212524919 is an apocalyptic number.

212524919 is a deficient number, since it is larger than the sum of its proper divisors (1).

212524919 is an equidigital number, since it uses as much as digits as its factorization.

212524919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 212524919 is about 14578.2344267061. The cubic root of 212524919 is about 596.7649208619.

The spelling of 212524919 in words is "two hundred twelve million, five hundred twenty-four thousand, nine hundred nineteen".