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57000029 = 450712647
BaseRepresentation
bin1101100101110…
…0000001011101
310222020220100012
43121130001131
5104043000104
65353413005
71261330562
oct331340135
9128226305
1057000029
112a1a1a69
121710a165
13ba69638
1477da869
15500dd6e
hex365c05d

57000029 has 4 divisors (see below), whose sum is σ = 57017184. Its totient is φ = 56982876.

The previous prime is 57000011. The next prime is 57000037. The reversal of 57000029 is 92000075.

57000029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57000029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56999968 and 57000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57000059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (14254296).

Almost surely, 257000029 is an apocalyptic number.

It is an amenable number.

57000029 is a deficient number, since it is larger than the sum of its proper divisors (17155).

57000029 is a wasteful number, since it uses less digits than its factorization.

57000029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 57000029 is about 7549.8363558424. The cubic root of 57000029 is about 384.8501783946.

The spelling of 57000029 in words is "fifty-seven million, twenty-nine", and thus it is an aban number and an uban number.

Divisors: 1 4507 12647 57000029