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57409445 = 515176039
BaseRepresentation
bin1101101011111…
…1111110100101
311000000200221202
43122333332211
5104144100240
65410252245
71264654322
oct332777645
9130020852
1057409445
112a451625
1217287085
13bb80ab2
1478a5b49
155090315
hex36bffa5

57409445 has 8 divisors (see below), whose sum is σ = 69348480. Its totient is φ = 45622800.

The previous prime is 57409421. The next prime is 57409447. The reversal of 57409445 is 54490475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57409445 - 28 = 57409189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57409399 and 57409408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57409447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37265 + ... + 38774.

It is an arithmetic number, because the mean of its divisors is an integer number (8668560).

Almost surely, 257409445 is an apocalyptic number.

It is an amenable number.

57409445 is a deficient number, since it is larger than the sum of its proper divisors (11939035).

57409445 is a wasteful number, since it uses less digits than its factorization.

57409445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76195.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 57409445 is about 7576.9020714273. The cubic root of 57409445 is about 385.7694064213.

The spelling of 57409445 in words is "fifty-seven million, four hundred nine thousand, four hundred forty-five".

Divisors: 1 5 151 755 76039 380195 11481889 57409445