521498880 has 432 divisors, whose sum is σ = 2142766080. Its totient is φ = 114573312.

The previous prime is 521498839. The next prime is 521498881. The reversal of 521498880 is 88894125.

It is a happy number.

521498880 is a `hidden beast` number, since 521 + 49 + 8 + 8 + 80 = 666.

It is a super-2 number, since 2×521498880² = 543922163682508800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (521498881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2338449 + ... + 2338671.

Almost surely, 2^521498880 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 521498880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071383040).

521498880 is an abundant number, since it is smaller than the sum of its proper divisors (1621267200).

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

521498880 is a wasteful number, since it uses less digits than its factorization.

521498880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 521498880 is about 22836.3499710440. The cubic root of 521498880 is about 804.9170496938.

The spelling of 521498880 in words is "five hundred twenty-one million, four hundred ninety-eight thousand, eight hundred eighty".