Search a number
-
+
57105047 = 479471283
BaseRepresentation
bin1101100111010…
…1101010010111
310222110020101202
43121311222113
5104104330142
65355543115
71262246006
oct331655227
9128406352
1057105047
112a26395a
121715aa9b
13baa538c
147826c3d
155030032
hex3675a97

57105047 has 8 divisors (see below), whose sum is σ = 58427136. Its totient is φ = 55787512.

The previous prime is 57105017. The next prime is 57105049. The reversal of 57105047 is 74050175.

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 57105047 - 214 = 57088663 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 (57105049) 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, 43868 + ... + 45150.

It is an arithmetic number, because the mean of its divisors is an integer number (7303392).

Almost surely, 257105047 is an apocalyptic number.

57105047 is a deficient number, since it is larger than the sum of its proper divisors (1322089).

57105047 is a wasteful number, since it uses less digits than its factorization.

57105047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 57105047 is about 7556.7881404734. The cubic root of 57105047 is about 385.0863852932.

The spelling of 57105047 in words is "fifty-seven million, one hundred five thousand, forty-seven".

Divisors: 1 47 947 1283 44509 60301 1215001 57105047