1090579521 has 16 divisors (see below), whose sum is σ = 1460470784. Its totient is φ = 723879504.

The previous prime is 1090579513. The next prime is 1090579543. The reversal of 1090579521 is 1259750901.

It is not a de Polignac number, because 1090579521 - 2³ = 1090579513 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 1090579521.

It is not an unprimeable number, because it can be changed into a prime (1090579561) 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, 1201950 + ... + 1202856.

It is an arithmetic number, because the mean of its divisors is an integer number (91279424).

Almost surely, 2^1090579521 is an apocalyptic number.

It is an amenable number.

1090579521 is a deficient number, since it is larger than the sum of its proper divisors (369891263).

1090579521 is an equidigital number, since it uses as much as digits as its factorization.

1090579521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 1090579521 is about 33023.9234646642. The cubic root of 1090579521 is about 1029.3248225363.

The spelling of 1090579521 in words is "one billion, ninety million, five hundred seventy-nine thousand, five hundred twenty-one".