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57040253 = 17231131291
BaseRepresentation
bin1101100110010…
…1110101111101
310222022221111222
43121211311331
5104100242003
65354323125
71261556054
oct331456575
9128287458
1057040253
112a21a206
12171294a5
13ba81a3a
14780b39b
15501ac38
hex3665d7d

57040253 has 16 divisors (see below), whose sum is σ = 63628416. Its totient is φ = 50856960.

The previous prime is 57040201. The next prime is 57040289. The reversal of 57040253 is 35204075.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57040253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57040453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43538 + ... + 44828.

It is an arithmetic number, because the mean of its divisors is an integer number (3976776).

Almost surely, 257040253 is an apocalyptic number.

It is an amenable number.

57040253 is a deficient number, since it is larger than the sum of its proper divisors (6588163).

57040253 is a wasteful number, since it uses less digits than its factorization.

57040253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 57040253 is about 7552.4997848395. The cubic root of 57040253 is about 384.9406846271.

The spelling of 57040253 in words is "fifty-seven million, forty thousand, two hundred fifty-three".

Divisors: 1 17 23 113 391 1291 1921 2599 21947 29693 44183 145883 504781 2480011 3355309 57040253