521796089 has 16 divisors (see below), whose sum is σ = 542931840. Its totient is φ = 501085440.

The previous prime is 521796083. The next prime is 521796091. The reversal of 521796089 is 980697125.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521796089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521796083) 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, 1453292 + ... + 1453650.

It is an arithmetic number, because the mean of its divisors is an integer number (33933240).

Almost surely, 2^521796089 is an apocalyptic number.

It is an amenable number.

521796089 is a deficient number, since it is larger than the sum of its proper divisors (21135751).

521796089 is a wasteful number, since it uses less digits than its factorization.

521796089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 521796089 is about 22842.8564107031. The cubic root of 521796089 is about 805.0699315558.

The spelling of 521796089 in words is "five hundred twenty-one million, seven hundred ninety-six thousand, eighty-nine".