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530051221 = 7591283417
BaseRepresentation
bin11111100101111…
…111000010010101
31100221101101120201
4133211333002111
52041143114341
6124332500501
716064234560
oct3745770225
91327341521
10530051221
11252222367
1212961a731
1385a7749b
14505794d7
1531802331
hex1f97f095

530051221 has 8 divisors (see below), whose sum is σ = 616040640. Its totient is φ = 446628768.

The previous prime is 530051191. The next prime is 530051243. The reversal of 530051221 is 122150035.

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

It is a cyclic number.

It is not a de Polignac number, because 530051221 - 213 = 530043029 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 (530055221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641296 + ... + 642121.

It is an arithmetic number, because the mean of its divisors is an integer number (77005080).

Almost surely, 2530051221 is an apocalyptic number.

It is an amenable number.

530051221 is a deficient number, since it is larger than the sum of its proper divisors (85989419).

530051221 is a wasteful number, since it uses less digits than its factorization.

530051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283483.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 530051221 is about 23022.8412885986. The cubic root of 530051221 is about 809.2933027282.

The spelling of 530051221 in words is "five hundred thirty million, fifty-one thousand, two hundred twenty-one".

Divisors: 1 7 59 413 1283417 8983919 75721603 530051221