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57668049 = 326407561
BaseRepresentation
bin1101101111111…
…1000111010001
311000111211200200
43123333013101
5104230334144
65420005413
71300112265
oct333770721
9130454620
1057668049
112a60894a
1217390869
13bc4170a
1479320a5
1550e1c69
hex36ff1d1

57668049 has 6 divisors (see below), whose sum is σ = 83298306. Its totient is φ = 38445360.

The previous prime is 57668041. The next prime is 57668053. The reversal of 57668049 is 94086675.

It can be written as a sum of positive squares in only one way, i.e., 57653649 + 14400 = 7593^2 + 120^2 .

It is not a de Polignac number, because 57668049 - 23 = 57668041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57667995 and 57668013.

It is not an unprimeable number, because it can be changed into a prime (57668041) 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 5 ways as a sum of consecutive naturals, for example, 3203772 + ... + 3203789.

It is an arithmetic number, because the mean of its divisors is an integer number (13883051).

Almost surely, 257668049 is an apocalyptic number.

It is an amenable number.

57668049 is a deficient number, since it is larger than the sum of its proper divisors (25630257).

57668049 is a wasteful number, since it uses less digits than its factorization.

57668049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407567 (or 6407564 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 57668049 is about 7593.9481825991. The cubic root of 57668049 is about 386.3477786827.

The spelling of 57668049 in words is "fifty-seven million, six hundred sixty-eight thousand, forty-nine".

Divisors: 1 3 9 6407561 19222683 57668049