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85060521 = 32721337401
BaseRepresentation
bin1010001000111…
…10101110101001
312221001112002200
411010132232221
5133233414041
612235050413
72052000600
oct504365651
9187045080
1085060521
1144018257
12245a0a09
1314812890
14b422a37
1577031b6
hex511eba9

85060521 has 72 divisors (see below), whose sum is σ = 158473224. Its totient is φ = 43545600.

The previous prime is 85060519. The next prime is 85060529. The reversal of 85060521 is 12506058.

85060521 is a `hidden beast` number, since 8 + 50 + 605 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 41024025 + 44036496 = 6405^2 + 6636^2 .

It is not a de Polignac number, because 85060521 - 21 = 85060519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85060529) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 211921 + ... + 212321.

It is an arithmetic number, because the mean of its divisors is an integer number (2201017).

Almost surely, 285060521 is an apocalyptic number.

It is an amenable number.

85060521 is a deficient number, since it is larger than the sum of its proper divisors (73412703).

85060521 is a wasteful number, since it uses less digits than its factorization.

85060521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 85060521 is about 9222.8260853168. The cubic root of 85060521 is about 439.7872956072.

Adding to 85060521 its reverse (12506058), we get a palindrome (97566579).

The spelling of 85060521 in words is "eighty-five million, sixty thousand, five hundred twenty-one".

Divisors: 1 3 7 9 13 21 37 39 49 63 91 111 117 147 259 273 333 401 441 481 637 777 819 1203 1443 1813 1911 2331 2807 3367 3609 4329 5213 5439 5733 8421 10101 14837 15639 16317 19649 23569 25263 30303 36491 44511 46917 58947 70707 103859 109473 133533 176841 192881 212121 255437 311577 328419 578643 727013 766311 934731 1350167 1735929 2181039 2298933 4050501 6543117 9451169 12151503 28353507 85060521