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57102897 = 319034299
BaseRepresentation
bin1101100111010…
…1001000110001
310222110010110010
43121311020301
5104104243042
65355525133
71262236515
oct331651061
9128403403
1057102897
112a262285
12171597a9
13baa43c7
147826145
15502e59c
hex3675231

57102897 has 4 divisors (see below), whose sum is σ = 76137200. Its totient is φ = 38068596.

The previous prime is 57102887. The next prime is 57102907. The reversal of 57102897 is 79820175.

57102897 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 an interprime number because it is at equal distance from previous prime (57102887) and next prime (57102907).

It is not a de Polignac number, because 57102897 - 210 = 57101873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57102887) 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, 9517147 + ... + 9517152.

It is an arithmetic number, because the mean of its divisors is an integer number (19034300).

Almost surely, 257102897 is an apocalyptic number.

It is an amenable number.

57102897 is a deficient number, since it is larger than the sum of its proper divisors (19034303).

57102897 is a wasteful number, since it uses less digits than its factorization.

57102897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19034302.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 57102897 is about 7556.6458829298. The cubic root of 57102897 is about 385.0815524097.

The spelling of 57102897 in words is "fifty-seven million, one hundred two thousand, eight hundred ninety-seven".

Divisors: 1 3 19034299 57102897