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530381565 = 32574339157
BaseRepresentation
bin11111100111001…
…111101011111101
31100222000011201200
4133213033223331
52041234202230
6124343530113
716100111640
oct3747175375
91328004650
10530381565
1125242857a
12129759939
1385b6195c
1450623a57
153186a160
hex1f9cfafd

530381565 has 48 divisors (see below), whose sum is σ = 1075122048. Its totient is φ = 236815488.

The previous prime is 530381549. The next prime is 530381629. The reversal of 530381565 is 565183035.

It is not a de Polignac number, because 530381565 - 24 = 530381549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6034 + ... + 33123.

It is an arithmetic number, because the mean of its divisors is an integer number (22398376).

Almost surely, 2530381565 is an apocalyptic number.

It is an amenable number.

530381565 is an abundant number, since it is smaller than the sum of its proper divisors (544740483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

530381565 is a wasteful number, since it uses less digits than its factorization.

530381565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39218 (or 39215 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 530381565 is about 23030.0144376854. The cubic root of 530381565 is about 809.4613931920.

It can be divided in two parts, 5303 and 81565, that added together give a palindrome (86868).

The spelling of 530381565 in words is "five hundred thirty million, three hundred eighty-one thousand, five hundred sixty-five".

Divisors: 1 3 5 7 9 15 21 35 43 45 63 105 129 215 301 315 387 645 903 1505 1935 2709 4515 13545 39157 117471 195785 274099 352413 587355 822297 1370495 1683751 1762065 2466891 4111485 5051253 8418755 11786257 12334455 15153759 25256265 35358771 58931285 75768795 106076313 176793855 530381565