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57665001 = 3157191641
BaseRepresentation
bin1101101111111…
…0010111101001
311000111200111210
43123332113221
5104230240001
65415543333
71300100352
oct333762751
9130450453
1057665001
112a606629
121738ab49
13bc40204
147930d29
1550e0dd6
hex36fe5e9

57665001 has 16 divisors (see below), whose sum is σ = 77902848. Its totient is φ = 37939200.

The previous prime is 57664987. The next prime is 57665009. The reversal of 57665001 is 10056675.

It is a de Polignac number, because none of the positive numbers 2k-57665001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57665001.

It is not an unprimeable number, because it can be changed into a prime (57665009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89641 + ... + 90281.

It is an arithmetic number, because the mean of its divisors is an integer number (4868928).

Almost surely, 257665001 is an apocalyptic number.

It is an amenable number.

57665001 is a deficient number, since it is larger than the sum of its proper divisors (20237847).

57665001 is a wasteful number, since it uses less digits than its factorization.

57665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 57665001 is about 7593.7474938267. The cubic root of 57665001 is about 386.3409718587.

The spelling of 57665001 in words is "fifty-seven million, six hundred sixty-five thousand, one".

Divisors: 1 3 157 191 471 573 641 1923 29987 89961 100637 122431 301911 367293 19221667 57665001