1090004521 has 16 divisors (see below), whose sum is σ = 1217462400. Its totient is φ = 969815808.

The previous prime is 1090004479. The next prime is 1090004533. The reversal of 1090004521 is 1254000901.

It is a cyclic number.

It is not a de Polignac number, because 1090004521 - 2⁹ = 1090004009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1090004492 and 1090004501.

It is not an unprimeable number, because it can be changed into a prime (1090004561) 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, 159115 + ... + 165823.

It is an arithmetic number, because the mean of its divisors is an integer number (76091400).

Almost surely, 2^1090004521 is an apocalyptic number.

It is an amenable number.

1090004521 is a deficient number, since it is larger than the sum of its proper divisors (127457879).

1090004521 is a wasteful number, since it uses less digits than its factorization.

1090004521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1090004521 is about 33015.2165069381. The cubic root of 1090004521 is about 1029.1438894298.

The spelling of 1090004521 in words is "one billion, ninety million, four thousand, five hundred twenty-one".