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507052305 = 365139109
BaseRepresentation
bin11110001110010…
…000000100010001
31022100002221000000
4132032100010101
52014301133210
6122151520213
715364605414
oct3616200421
91270087000
10507052305
112402439a1
12121989069
1381084066
144b4adb7b
152e7acac0
hex1e390111

507052305 has 28 divisors (see below), whose sum is σ = 912283380. Its totient is φ = 270425952.

The previous prime is 507052283. The next prime is 507052321. The reversal of 507052305 is 503250705.

It can be written as a sum of positive squares in 2 ways, for example, as 350101521 + 156950784 = 18711^2 + 12528^2 .

It is not a de Polignac number, because 507052305 - 26 = 507052241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 65910 + ... + 73199.

Almost surely, 2507052305 is an apocalyptic number.

It is an amenable number.

507052305 is a deficient number, since it is larger than the sum of its proper divisors (405231075).

507052305 is an equidigital number, since it uses as much as digits as its factorization.

507052305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139132 (or 139117 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 507052305 is about 22517.8219417421. The cubic root of 507052305 is about 797.4147299940.

It can be divided in two parts, 5070 and 52305, that added together give a palindrome (57375).

The spelling of 507052305 in words is "five hundred seven million, fifty-two thousand, three hundred five".

Divisors: 1 3 5 9 15 27 45 81 135 243 405 729 1215 3645 139109 417327 695545 1251981 2086635 3755943 6259905 11267829 18779715 33803487 56339145 101410461 169017435 507052305