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530557839 = 3272311972
BaseRepresentation
bin11111100111111…
…010101110001111
31100222100010112100
4133213322232033
52041310322324
6124351410143
716101444600
oct3747725617
91328303470
10530557839
11252538a59
12129823953
1385bc3c66
145066bda7
15318a24c9
hex1f9fab8f

530557839 has 54 divisors (see below), whose sum is σ = 924933984. Its totient is φ = 291906720.

The previous prime is 530557823. The next prime is 530557877. The reversal of 530557839 is 938755035.

It is not a de Polignac number, because 530557839 - 24 = 530557823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 530557794 and 530557803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530557439) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2693089 + ... + 2693285.

Almost surely, 2530557839 is an apocalyptic number.

530557839 is a deficient number, since it is larger than the sum of its proper divisors (394376145).

530557839 is a wasteful number, since it uses less digits than its factorization.

530557839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 530557839 is about 23033.8411690278. The cubic root of 530557839 is about 809.5510589487.

The spelling of 530557839 in words is "five hundred thirty million, five hundred fifty-seven thousand, eight hundred thirty-nine".

Divisors: 1 3 7 9 21 31 49 63 93 147 197 217 279 441 591 651 1379 1519 1773 1953 4137 4557 6107 9653 12411 13671 18321 28959 38809 42749 54963 86877 116427 128247 271663 299243 349281 384741 814989 897729 1203079 1901641 2444967 2693187 3609237 5704923 8421553 10827711 17114769 25264659 58950871 75793977 176852613 530557839