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85119957 = 33131971231
BaseRepresentation
bin1010001001011…
…01001111010101
312221011112122000
411010231033111
5133242314312
612240225513
72052336066
oct504551725
9187145560
1085119957
114405897a
122460b299
1314833950
14b43a56d
157715adc
hex512d3d5

85119957 has 32 divisors (see below), whose sum is σ = 136604160. Its totient is φ = 52073280.

The previous prime is 85119913. The next prime is 85119997. The reversal of 85119957 is 75991158.

It is not a de Polignac number, because 85119957 - 28 = 85119701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85119997) 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, 68532 + ... + 69762.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 285119957 is an apocalyptic number.

It is an amenable number.

85119957 is a deficient number, since it is larger than the sum of its proper divisors (51484203).

85119957 is a wasteful number, since it uses less digits than its factorization.

85119957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450 (or 1444 counting only the distinct ones).

The product of its digits is 113400, while the sum is 45.

The square root of 85119957 is about 9226.0477453783. The cubic root of 85119957 is about 439.8897054816.

The spelling of 85119957 in words is "eighty-five million, one hundred nineteen thousand, nine hundred fifty-seven".

Divisors: 1 3 9 13 27 39 117 197 351 591 1231 1773 2561 3693 5319 7683 11079 16003 23049 33237 48009 69147 144027 242507 432081 727521 2182563 3152591 6547689 9457773 28373319 85119957