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57445508 = 2214361377
BaseRepresentation
bin1101101100100…
…0110010000100
311000002112102102
43123020302010
5104201224013
65411131232
71265164421
oct333106204
9130075372
1057445508
112a47672a
12172a3b18
13bb94333
1478b4d48
15509ad58
hex36c8c84

57445508 has 6 divisors (see below), whose sum is σ = 100529646. Its totient is φ = 28722752.

The previous prime is 57445501. The next prime is 57445523. The reversal of 57445508 is 80554475.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 15429184 = 6482^2 + 3928^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (57445501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7180685 + ... + 7180692.

It is an arithmetic number, because the mean of its divisors is an integer number (16754941).

Almost surely, 257445508 is an apocalyptic number.

It is an amenable number.

57445508 is a deficient number, since it is larger than the sum of its proper divisors (43084138).

57445508 is a wasteful number, since it uses less digits than its factorization.

57445508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14361381 (or 14361379 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 57445508 is about 7579.2814962897. The cubic root of 57445508 is about 385.8501660134.

The spelling of 57445508 in words is "fifty-seven million, four hundred forty-five thousand, five hundred eight".

Divisors: 1 2 4 14361377 28722754 57445508