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85211373 = 31310931999
BaseRepresentation
bin1010001010000…
…11100011101101
312221100012000210
411011003203231
5133303230443
612242213033
72053166442
oct505034355
9187305023
1085211373
1144110625
1224654179
1314866440
14b4619c9
157732c33
hex51438ed

85211373 has 16 divisors (see below), whose sum is σ = 122528000. Its totient is φ = 52363584.

The previous prime is 85211363. The next prime is 85211381. The reversal of 85211373 is 37311258.

It is not a de Polignac number, because 85211373 - 25 = 85211341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85211373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85211363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41628 + ... + 43626.

It is an arithmetic number, because the mean of its divisors is an integer number (7658000).

Almost surely, 285211373 is an apocalyptic number.

It is an amenable number.

85211373 is a deficient number, since it is larger than the sum of its proper divisors (37316627).

85211373 is a wasteful number, since it uses less digits than its factorization.

85211373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its digits is 5040, while the sum is 30.

The square root of 85211373 is about 9231.0006499837. Note that the first 3 decimals coincide. The cubic root of 85211373 is about 440.0471247736.

The spelling of 85211373 in words is "eighty-five million, two hundred eleven thousand, three hundred seventy-three".

Divisors: 1 3 13 39 1093 1999 3279 5997 14209 25987 42627 77961 2184907 6554721 28403791 85211373