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52120705 = 5713196029
BaseRepresentation
bin1100011011010…
…0110010000001
310122002000011111
43012310302001
5101320330310
65101043321
71202006260
oct306646201
9118060144
1052120705
112746a06a
1215556541
13aa4b770
146cca5d7
15489828a
hex31b4c81

52120705 has 32 divisors (see below), whose sum is σ = 81043200. Its totient is φ = 31249152.

The previous prime is 52120699. The next prime is 52120709. The reversal of 52120705 is 50702125.

It is a cyclic number.

It is not a de Polignac number, because 52120705 - 29 = 52120193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52120709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5631 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (2532600).

Almost surely, 252120705 is an apocalyptic number.

It is an amenable number.

52120705 is a deficient number, since it is larger than the sum of its proper divisors (28922495).

52120705 is a wasteful number, since it uses less digits than its factorization.

52120705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 52120705 is about 7219.4670855957. The cubic root of 52120705 is about 373.5396955588.

It can be divided in two parts, 52120 and 705, that added together give a palindrome (52825).

The spelling of 52120705 in words is "fifty-two million, one hundred twenty thousand, seven hundred five".

Divisors: 1 5 7 13 19 35 65 91 95 133 247 455 665 1235 1729 6029 8645 30145 42203 78377 114551 211015 391885 548639 572755 801857 1489163 2743195 4009285 7445815 10424141 52120705