1530197 has 2 divisors, whose sum is σ = 1530198. Its totient is φ = 1530196.

The previous prime is 1530173. The next prime is 1530227. The reversal of 1530197 is 7910351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1069156 + 461041 = 1034^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530197 - 2¹⁸ = 1268053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765098 + 765099.

It is an arithmetic number, because the mean of its divisors is an integer number (765099).

2^1530197 is an apocalyptic number.

It is an amenable number.

1530197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530197 is an equidigital number, since it uses as much as digits as its factorization.

1530197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1530197 is about 1237.0113176523. The cubic root of 1530197 is about 115.2344806202.

The spelling of 1530197 in words is "one million, five hundred thirty thousand, one hundred ninety-seven".