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85037485 = 51317411877
BaseRepresentation
bin1010001000110…
…01000110101101
312221000100111111
411010121012231
5133232144420
612234352021
72051543461
oct504310655
9187010444
1085037485
1144001a15
122458b611
1314805250
14b4184a1
1576eb45a
hex51191ad

85037485 has 32 divisors (see below), whose sum is σ = 119260512. Its totient is φ = 57630720.

The previous prime is 85037473. The next prime is 85037489. The reversal of 85037485 is 58473058.

It can be written as a sum of positive squares in 16 ways, for example, as 37785609 + 47251876 = 6147^2 + 6874^2 .

It is not a de Polignac number, because 85037485 - 27 = 85037357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85037489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44367 + ... + 46243.

It is an arithmetic number, because the mean of its divisors is an integer number (3726891).

Almost surely, 285037485 is an apocalyptic number.

85037485 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85037485 is a deficient number, since it is larger than the sum of its proper divisors (34223027).

85037485 is a wasteful number, since it uses less digits than its factorization.

85037485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 85037485 is about 9221.5771427668. The cubic root of 85037485 is about 439.7475911132.

The spelling of 85037485 in words is "eighty-five million, thirty-seven thousand, four hundred eighty-five".

Divisors: 1 5 13 17 41 65 85 205 221 533 697 1105 1877 2665 3485 9061 9385 24401 31909 45305 76957 122005 159545 384785 414817 1000441 1308269 2074085 5002205 6541345 17007497 85037485