1530115 has 4 divisors (see below), whose sum is σ = 1836144. Its totient is φ = 1224088.

The previous prime is 1530107. The next prime is 1530131. The reversal of 1530115 is 5110351.

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 1530115 - 2³ = 1530107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153007 + ... + 153016.

It is an arithmetic number, because the mean of its divisors is an integer number (459036).

2^1530115 is an apocalyptic number.

1530115 is a deficient number, since it is larger than the sum of its proper divisors (306029).

1530115 is an equidigital number, since it uses as much as digits as its factorization.

1530115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306028.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 1530115 is about 1236.9781728066. The cubic root of 1530115 is about 115.2324221933.

Adding to 1530115 its reverse (5110351), we get a palindrome (6640466).

It can be divided in two parts, 15 and 30115, that multiplied together give a triangular number (451725 = T₉₅₀).

The spelling of 1530115 in words is "one million, five hundred thirty thousand, one hundred fifteen".