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57284061 = 3142713381
BaseRepresentation
bin1101101010000…
…1010111011101
310222210022221220
43122201113131
5104131042221
65403443553
71263622632
oct332412735
9128708856
1057284061
112a3763aa
12172265b9
13bb389c3
147872189
1550680c6
hex36a15dd

57284061 has 8 divisors (see below), whose sum is σ = 76437984. Its totient is φ = 38159760.

The previous prime is 57284057. The next prime is 57284081. The reversal of 57284061 is 16048275.

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

It is not a de Polignac number, because 57284061 - 22 = 57284057 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57284081) 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, 2410 + ... + 10971.

It is an arithmetic number, because the mean of its divisors is an integer number (9554748).

Almost surely, 257284061 is an apocalyptic number.

It is an amenable number.

57284061 is a deficient number, since it is larger than the sum of its proper divisors (19153923).

57284061 is a wasteful number, since it uses less digits than its factorization.

57284061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14811.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 57284061 is about 7568.6234547638. The cubic root of 57284061 is about 385.4883576183.

The spelling of 57284061 in words is "fifty-seven million, two hundred eighty-four thousand, sixty-one".

Divisors: 1 3 1427 4281 13381 40143 19094687 57284061