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85211369 = 834332371
BaseRepresentation
bin1010001010000…
…11100011101001
312221100012000122
411011003203221
5133303230434
612242213025
72053166435
oct505034351
9187305018
1085211369
1144110621
1224654175
1314866439
14b4619c5
157732c2e
hex51438e9

85211369 has 8 divisors (see below), whose sum is σ = 86473632. Its totient is φ = 83954880.

The previous prime is 85211363. The next prime is 85211381. The reversal of 85211369 is 96311258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85211369 - 212 = 85207273 is a prime.

It is a super-2 number, since 2×852113692 = 14521954813708322, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34754 + ... + 37124.

It is an arithmetic number, because the mean of its divisors is an integer number (10809204).

Almost surely, 285211369 is an apocalyptic number.

It is an amenable number.

85211369 is a deficient number, since it is larger than the sum of its proper divisors (1262263).

85211369 is a wasteful number, since it uses less digits than its factorization.

85211369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887.

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

The square root of 85211369 is about 9231.0004333225. Note that the first 3 decimals coincide. The cubic root of 85211369 is about 440.0471178880.

It can be divided in two parts, 852 and 11369, that added together give a palindrome (12221).

The spelling of 85211369 in words is "eighty-five million, two hundred eleven thousand, three hundred sixty-nine".

Divisors: 1 83 433 2371 35939 196793 1026643 85211369