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57279485 = 553216149
BaseRepresentation
bin1101101010000…
…0001111111101
310222210002200102
43122200033331
5104130420420
65403410445
71263603404
oct332401775
9128702612
1057279485
112a372a1a
1217223a25
13bb368b3
14787063b
155066a75
hex36a03fd

57279485 has 8 divisors (see below), whose sum is σ = 70032600. Its totient is φ = 44958784.

The previous prime is 57279473. The next prime is 57279493. The reversal of 57279485 is 58497275.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2785561 + 54493924 = 1669^2 + 7382^2 .

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 57279485 - 210 = 57278461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107810 + ... + 108339.

It is an arithmetic number, because the mean of its divisors is an integer number (8754075).

Almost surely, 257279485 is an apocalyptic number.

It is an amenable number.

57279485 is a deficient number, since it is larger than the sum of its proper divisors (12753115).

57279485 is a wasteful number, since it uses less digits than its factorization.

57279485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216207.

The product of its digits is 705600, while the sum is 47.

The square root of 57279485 is about 7568.3211480486. The cubic root of 57279485 is about 385.4780927403.

The spelling of 57279485 in words is "fifty-seven million, two hundred seventy-nine thousand, four hundred eighty-five".

Divisors: 1 5 53 265 216149 1080745 11455897 57279485