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57246169 = 179319811
BaseRepresentation
bin1101101001100…
…0000111011001
310222201101222111
43122120013121
5104123334134
65402552321
71263404311
oct332300731
9128641874
1057246169
112a34a992
12172086a1
13bb24696
147862441
15505bc64
hex36981d9

57246169 has 4 divisors (see below), whose sum is σ = 57566160. Its totient is φ = 56926180.

The previous prime is 57246151. The next prime is 57246193. The reversal of 57246169 is 96164275.

57246169 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 not a de Polignac number, because 57246169 - 27 = 57246041 is a prime.

It is a super-2 number, since 2×572461692 = 6554247730353122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57246109) 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, 159727 + ... + 160084.

It is an arithmetic number, because the mean of its divisors is an integer number (14391540).

Almost surely, 257246169 is an apocalyptic number.

It is an amenable number.

57246169 is a deficient number, since it is larger than the sum of its proper divisors (319991).

57246169 is a wasteful number, since it uses less digits than its factorization.

57246169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319990.

The product of its digits is 90720, while the sum is 40.

The square root of 57246169 is about 7566.1198113696. The cubic root of 57246169 is about 385.4033418421.

The spelling of 57246169 in words is "fifty-seven million, two hundred forty-six thousand, one hundred sixty-nine".

Divisors: 1 179 319811 57246169