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530066021 = 1513510371
BaseRepresentation
bin11111100110000…
…010101001100101
31100221102010212212
4133212002221211
52041144103041
6124333053205
716064325662
oct3746025145
91327363785
10530066021
112522324a1
12129627205
1385a81144
1450580a69
15318068eb
hex1f982a65

530066021 has 4 divisors (see below), whose sum is σ = 533576544. Its totient is φ = 526555500.

The previous prime is 530066003. The next prime is 530066023. The reversal of 530066021 is 120660035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120660035 = 524132007.

It is a cyclic number.

It is not a de Polignac number, because 530066021 - 26 = 530065957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530066023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755035 + ... + 1755336.

It is an arithmetic number, because the mean of its divisors is an integer number (133394136).

Almost surely, 2530066021 is an apocalyptic number.

It is an amenable number.

530066021 is a deficient number, since it is larger than the sum of its proper divisors (3510523).

530066021 is a wasteful number, since it uses less digits than its factorization.

530066021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510522.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 530066021 is about 23023.1627062834. The cubic root of 530066021 is about 809.3008349747.

The spelling of 530066021 in words is "five hundred thirty million, sixty-six thousand, twenty-one".

Divisors: 1 151 3510371 530066021