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85230011 = 109178121
BaseRepresentation
bin1010001010010…
…00000110111011
312221101010121002
411011020012323
5133304330021
612242435215
72053304666
oct505100673
9187333532
1085230011
1144123629
1224662b0b
1314871a79
14b4686dd
15773850b
hex51481bb

85230011 has 4 divisors (see below), whose sum is σ = 85309224. Its totient is φ = 85150800.

The previous prime is 85229983. The next prime is 85230023. The reversal of 85230011 is 11003258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85230011 - 210 = 85228987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85230031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37970 + ... + 40151.

It is an arithmetic number, because the mean of its divisors is an integer number (21327306).

Almost surely, 285230011 is an apocalyptic number.

85230011 is a deficient number, since it is larger than the sum of its proper divisors (79213).

85230011 is a wasteful number, since it uses less digits than its factorization.

85230011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79212.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 85230011 is about 9232.0101278107. The cubic root of 85230011 is about 440.0792057824.

Adding to 85230011 its reverse (11003258), we get a palindrome (96233269).

The spelling of 85230011 in words is "eighty-five million, two hundred thirty thousand, eleven".

Divisors: 1 1091 78121 85230011