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57748057 is a prime number
BaseRepresentation
bin1101110001001…
…0101001011001
311000122220102221
43130102221121
5104240414212
65421424041
71300564453
oct334225131
9130586387
1057748057
112a662a74
121740b021
13bc6bc63
1479532d3
15510a807
hex3712a59

57748057 has 2 divisors, whose sum is σ = 57748058. Its totient is φ = 57748056.

The previous prime is 57748051. The next prime is 57748069. The reversal of 57748057 is 75084775.

57748057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57699216 + 48841 = 7596^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 57748057 - 211 = 57746009 is a prime.

It is not a weakly prime, because it can be changed into another prime (57748051) 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 as a sum of consecutive naturals, namely, 28874028 + 28874029.

It is an arithmetic number, because the mean of its divisors is an integer number (28874029).

Almost surely, 257748057 is an apocalyptic number.

It is an amenable number.

57748057 is a deficient number, since it is larger than the sum of its proper divisors (1).

57748057 is an equidigital number, since it uses as much as digits as its factorization.

57748057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 57748057 is about 7599.2142356957. The cubic root of 57748057 is about 386.5263676326.

It can be divided in two parts, 5774 and 8057, that added together give a palindrome (13831).

The spelling of 57748057 in words is "fifty-seven million, seven hundred forty-eight thousand, fifty-seven".