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57557053 = 173385709
BaseRepresentation
bin1101101110010…
…0000000111101
311000022012102201
43123210000331
5104213311203
65413351501
71266140551
oct333440075
9130265381
1057557053
112a542514
1217338591
13bc03038
147903861
1550bde1d
hex36e403d

57557053 has 4 divisors (see below), whose sum is σ = 60942780. Its totient is φ = 54171328.

The previous prime is 57557047. The next prime is 57557057. The reversal of 57557053 is 35075575.

57557053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35485849 + 22071204 = 5957^2 + 4698^2 .

It is a cyclic number.

It is not a de Polignac number, because 57557053 - 25 = 57557021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57557057) 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 in 3 ways as a sum of consecutive naturals, for example, 1692838 + ... + 1692871.

It is an arithmetic number, because the mean of its divisors is an integer number (15235695).

Almost surely, 257557053 is an apocalyptic number.

It is an amenable number.

57557053 is a deficient number, since it is larger than the sum of its proper divisors (3385727).

57557053 is a wasteful number, since it uses less digits than its factorization.

57557053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385726.

The product of its (nonzero) digits is 91875, while the sum is 37.

The square root of 57557053 is about 7586.6364747495. The cubic root of 57557053 is about 386.0997464756.

The spelling of 57557053 in words is "fifty-seven million, five hundred fifty-seven thousand, fifty-three".

Divisors: 1 17 3385709 57557053