1530145 has 4 divisors (see below), whose sum is σ = 1836180. Its totient is φ = 1224112.

The previous prime is 1530143. The next prime is 1530149. The reversal of 1530145 is 5410351.

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

It can be written as a sum of positive squares in 2 ways, for example, as 685584 + 844561 = 828^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530145 - 2¹ = 1530143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530143) 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, 153010 + ... + 153019.

It is an arithmetic number, because the mean of its divisors is an integer number (459045).

2^1530145 is an apocalyptic number.

It is an amenable number.

1530145 is a deficient number, since it is larger than the sum of its proper divisors (306035).

1530145 is an equidigital number, since it uses as much as digits as its factorization.

1530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306034.

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

The square root of 1530145 is about 1236.9902990727. The cubic root of 1530145 is about 115.2331752848.

Adding to 1530145 its reverse (5410351), we get a palindrome (6940496).

The spelling of 1530145 in words is "one million, five hundred thirty thousand, one hundred forty-five".