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530015421 = 31313590139
BaseRepresentation
bin11111100101110…
…110010010111101
31100221022120110210
4133211312102331
52041140443141
6124332023033
716064025315
oct3745662275
91327276423
10530015421
112521a8481
12129601a79
1385a640c0
145056a445
15317e6916
hex1f9764bd

530015421 has 8 divisors (see below), whose sum is σ = 761047840. Its totient is φ = 326163312.

The previous prime is 530015413. The next prime is 530015459. The reversal of 530015421 is 124510035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 530015421 - 23 = 530015413 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 (530015411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6795031 + ... + 6795108.

It is an arithmetic number, because the mean of its divisors is an integer number (95130980).

Almost surely, 2530015421 is an apocalyptic number.

It is an amenable number.

530015421 is a deficient number, since it is larger than the sum of its proper divisors (231032419).

530015421 is a wasteful number, since it uses less digits than its factorization.

530015421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13590155.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 530015421 is about 23022.0637867242. The cubic root of 530015421 is about 809.2750822547.

Adding to 530015421 its reverse (124510035), we get a palindrome (654525456).

The spelling of 530015421 in words is "five hundred thirty million, fifteen thousand, four hundred twenty-one".

Divisors: 1 3 13 39 13590139 40770417 176671807 530015421