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85130011 = 199427789
BaseRepresentation
bin1010001001011…
…11101100011011
312221012001102101
411010233230123
5133243130021
612240344231
72052410311
oct504575433
9187161371
1085130011
114406548a
1224615077
13148383b5
14b4400b1
157718a91
hex512fb1b

85130011 has 4 divisors (see below), whose sum is σ = 85558000. Its totient is φ = 84702024.

The previous prime is 85130009. The next prime is 85130021. The reversal of 85130011 is 11003158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11003158 = 25501579.

It is a cyclic number.

It is not a de Polignac number, because 85130011 - 21 = 85130009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85130021) 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, 213696 + ... + 214093.

It is an arithmetic number, because the mean of its divisors is an integer number (21389500).

Almost surely, 285130011 is an apocalyptic number.

85130011 is a deficient number, since it is larger than the sum of its proper divisors (427989).

85130011 is a wasteful number, since it uses less digits than its factorization.

85130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427988.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 85130011 is about 9226.5925996545. The cubic root of 85130011 is about 439.9070240875.

Adding to 85130011 its reverse (11003158), we get a palindrome (96133169).

The spelling of 85130011 in words is "eighty-five million, one hundred thirty thousand, eleven".

Divisors: 1 199 427789 85130011