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550243211 = 71931317421
BaseRepresentation
bin100000110011000…
…000101110001011
31102100101020210012
4200303000232023
52111330240321
6130333342135
716430663420
oct4063005613
91370336705
10550243211
11262663961
1213433794b
1389cc70cb
1453113d47
153349005b
hex20cc0b8b

550243211 has 32 divisors (see below), whose sum is σ = 687083520. Its totient is φ = 430012800.

The previous prime is 550243189. The next prime is 550243219. The reversal of 550243211 is 112342055.

It is not a de Polignac number, because 550243211 - 214 = 550226827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550243219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1306781 + ... + 1307201.

It is an arithmetic number, because the mean of its divisors is an integer number (21471360).

Almost surely, 2550243211 is an apocalyptic number.

550243211 is a deficient number, since it is larger than the sum of its proper divisors (136840309).

550243211 is a wasteful number, since it uses less digits than its factorization.

550243211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 550243211 is about 23457.2635019518. The cubic root of 550243211 is about 819.4420212555.

Adding to 550243211 its reverse (112342055), we get a palindrome (662585266).

The spelling of 550243211 in words is "five hundred fifty million, two hundred forty-three thousand, two hundred eleven".

Divisors: 1 7 19 31 133 217 317 421 589 2219 2947 4123 6023 7999 9827 13051 42161 55993 68789 91357 133457 186713 247969 934199 1306991 1735783 2535683 4137167 17749781 28960169 78606173 550243211