521796090 has 32 divisors (see below), whose sum is σ = 1253693376. Its totient is φ = 138992000.

The previous prime is 521796083. The next prime is 521796091. The reversal of 521796090 is 90697125.

It is not an unprimeable number, because it can be changed into a prime (521796091) 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, 19465 + ... + 37715.

It is an arithmetic number, because the mean of its divisors is an integer number (39177918).

Almost surely, 2^521796090 is an apocalyptic number.

521796090 is an abundant number, since it is smaller than the sum of its proper divisors (731897286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521796090 is a wasteful number, since it uses less digits than its factorization.

521796090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19214.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 521796090 is about 22842.8564325918. The cubic root of 521796090 is about 805.0699320701.

The spelling of 521796090 in words is "five hundred twenty-one million, seven hundred ninety-six thousand, ninety".