1530865 has 16 divisors (see below), whose sum is σ = 2119680. Its totient is φ = 1039680.

The previous prime is 1530863. The next prime is 1530869. The reversal of 1530865 is 5680351.

It is not a de Polignac number, because 1530865 - 2¹ = 1530863 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1530863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6571 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (132480).

2^1530865 is an apocalyptic number.

It is an amenable number.

1530865 is a deficient number, since it is larger than the sum of its proper divisors (588815).

1530865 is a wasteful number, since it uses less digits than its factorization.

1530865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1530865 is about 1237.2812938051. The cubic root of 1530865 is about 115.2512465300.

The spelling of 1530865 in words is "one million, five hundred thirty thousand, eight hundred sixty-five".