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1530211 = 13111681
BaseRepresentation
bin101110101100101100011
32212202001111
411311211203
5342431321
652444151
716002154
oct5654543
92782044
101530211
11955741
12619657
13417667
142bb92b
152035e1
hex175963

1530211 has 4 divisors (see below), whose sum is σ = 1542024. Its totient is φ = 1518400.

The previous prime is 1530197. The next prime is 1530227. The reversal of 1530211 is 1120351.

1530211 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1530211 - 213 = 1522019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1530191 and 1530200.

It is not an unprimeable number, because it can be changed into a prime (1530281) 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, 5710 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (385506).

21530211 is an apocalyptic number.

1530211 is a deficient number, since it is larger than the sum of its proper divisors (11813).

1530211 is a wasteful number, since it uses less digits than its factorization.

1530211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11812.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1530211 is about 1237.0169764397. The cubic root of 1530211 is about 115.2348320516.

Adding to 1530211 its reverse (1120351), we get a palindrome (2650562).

The spelling of 1530211 in words is "one million, five hundred thirty thousand, two hundred eleven".

Divisors: 1 131 11681 1530211