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57006443 = 1323190657
BaseRepresentation
bin1101100101110…
…1100101101011
310222021020010202
43121131211223
5104043201233
65353502415
71261355354
oct331354553
9128236122
1057006443
112a1a686a
1217111a0b
13ba6c530
1477dcd2b
155010be8
hex365d96b

57006443 has 8 divisors (see below), whose sum is σ = 64061088. Its totient is φ = 50333184.

The previous prime is 57006419. The next prime is 57006461. The reversal of 57006443 is 34460075.

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 57006443 - 212 = 57002347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57006413) 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, 95030 + ... + 95627.

It is an arithmetic number, because the mean of its divisors is an integer number (8007636).

Almost surely, 257006443 is an apocalyptic number.

57006443 is a deficient number, since it is larger than the sum of its proper divisors (7054645).

57006443 is a wasteful number, since it uses less digits than its factorization.

57006443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190693.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 57006443 is about 7550.2611213123. The cubic root of 57006443 is about 384.8646131035.

The spelling of 57006443 in words is "fifty-seven million, six thousand, four hundred forty-three".

Divisors: 1 13 23 299 190657 2478541 4385111 57006443