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57752045 = 513888493
BaseRepresentation
bin1101110001001…
…1100111101101
311000200002220122
43130103213231
5104241031140
65421454325
71300612211
oct334234755
9130602818
1057752045
112a665a6a
12174113a5
13bc70a10
147954941
15510bab5
hex37139ed

57752045 has 8 divisors (see below), whose sum is σ = 74633496. Its totient is φ = 42647616.

The previous prime is 57752017. The next prime is 57752047. The reversal of 57752045 is 54025775.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9616201 + 48135844 = 3101^2 + 6938^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57752045 - 222 = 53557741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57751996 and 57752014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57752047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444182 + ... + 444311.

It is an arithmetic number, because the mean of its divisors is an integer number (9329187).

Almost surely, 257752045 is an apocalyptic number.

It is an amenable number.

57752045 is a deficient number, since it is larger than the sum of its proper divisors (16881451).

57752045 is a wasteful number, since it uses less digits than its factorization.

57752045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888511.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 57752045 is about 7599.4766267158. The cubic root of 57752045 is about 386.5352650844.

The spelling of 57752045 in words is "fifty-seven million, seven hundred fifty-two thousand, forty-five".

Divisors: 1 5 13 65 888493 4442465 11550409 57752045