1080521 has 4 divisors (see below), whose sum is σ = 1163652. Its totient is φ = 997392.

The previous prime is 1080491. The next prime is 1080523. The reversal of 1080521 is 1250801.

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 102400 + 978121 = 320^2 + 989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1080521.

It is not an unprimeable number, because it can be changed into a prime (1080523) 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, 41546 + ... + 41571.

It is an arithmetic number, because the mean of its divisors is an integer number (290913).

2^1080521 is an apocalyptic number.

It is an amenable number.

1080521 is a deficient number, since it is larger than the sum of its proper divisors (83131).

1080521 is an equidigital number, since it uses as much as digits as its factorization.

1080521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83130.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1080521 is about 1039.4811205597. The cubic root of 1080521 is about 102.6150522496.

The spelling of 1080521 in words is "one million, eighty thousand, five hundred twenty-one".