521364360 has 128 divisors (see below), whose sum is σ = 1730626560. Its totient is φ = 124588800.

The previous prime is 521364359. The next prime is 521364367. The reversal of 521364360 is 63463125.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (521364367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90939 + ... + 96501.

It is an arithmetic number, because the mean of its divisors is an integer number (13520520).

Almost surely, 2^521364360 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 521364360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865313280).

521364360 is an abundant number, since it is smaller than the sum of its proper divisors (1209262200).

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

521364360 is a wasteful number, since it uses less digits than its factorization.

521364360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659 (or 5655 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 521364360 is about 22833.4044767748. The cubic root of 521364360 is about 804.8478346185.

The spelling of 521364360 in words is "five hundred twenty-one million, three hundred sixty-four thousand, three hundred sixty".