1528961 has 4 divisors (see below), whose sum is σ = 1747392. Its totient is φ = 1310532.

The previous prime is 1528939. The next prime is 1528979. The reversal of 1528961 is 1698251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1528961 - 2⁶ = 1528897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1528061) 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, 109205 + ... + 109218.

It is an arithmetic number, because the mean of its divisors is an integer number (436848).

2^1528961 is an apocalyptic number.

It is an amenable number.

1528961 is a deficient number, since it is larger than the sum of its proper divisors (218431).

1528961 is an equidigital number, since it uses as much as digits as its factorization.

1528961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218430.

The product of its digits is 4320, while the sum is 32.

The square root of 1528961 is about 1236.5116255014. The cubic root of 1528961 is about 115.2034457962.

The spelling of 1528961 in words is "one million, five hundred twenty-eight thousand, nine hundred sixty-one".