521490480 has 320 divisors, whose sum is σ = 1937875968. Its totient is φ = 113541120.

The previous prime is 521490461. The next prime is 521490481. The reversal of 521490480 is 84094125.

It is not an unprimeable number, because it can be changed into a prime (521490481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4614904 + ... + 4615016.

Almost surely, 2^521490480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521490480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968937984).

521490480 is an abundant number, since it is smaller than the sum of its proper divisors (1416385488).

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

521490480 is a wasteful number, since it uses less digits than its factorization.

521490480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 521490480 is about 22836.1660529958. The cubic root of 521490480 is about 804.9127279591.

The spelling of 521490480 in words is "five hundred twenty-one million, four hundred ninety thousand, four hundred eighty".