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57890297 = 419138163
BaseRepresentation
bin1101110011010…
…1010111111001
311000221010120002
43130311113321
5104304442142
65424442345
71302026243
oct334652771
9130833502
1057890297
112a74a923
12174793b5
13bcbb91a
14798d093
155137a32
hex37355f9

57890297 has 4 divisors (see below), whose sum is σ = 58028880. Its totient is φ = 57751716.

The previous prime is 57890291. The next prime is 57890377. The reversal of 57890297 is 79209875.

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 not a de Polignac number, because 57890297 - 26 = 57890233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57890291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68663 + ... + 69500.

It is an arithmetic number, because the mean of its divisors is an integer number (14507220).

Almost surely, 257890297 is an apocalyptic number.

It is an amenable number.

57890297 is a deficient number, since it is larger than the sum of its proper divisors (138583).

57890297 is a wasteful number, since it uses less digits than its factorization.

57890297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138582.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 57890297 is about 7608.5673421479. The cubic root of 57890297 is about 386.8434601594.

The spelling of 57890297 in words is "fifty-seven million, eight hundred ninety thousand, two hundred ninety-seven".

Divisors: 1 419 138163 57890297