521452330 has 16 divisors (see below), whose sum is σ = 1072702080. Its totient is φ = 178783632.

The previous prime is 521452307. The next prime is 521452367. The reversal of 521452330 is 33254125.

It is a junction number, because it is equal to n+sod(n) for n = 521452295 and 521452304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3724590 + ... + 3724729.

It is an arithmetic number, because the mean of its divisors is an integer number (67043880).

Almost surely, 2^521452330 is an apocalyptic number.

521452330 is an abundant number, since it is smaller than the sum of its proper divisors (551249750).

521452330 is a wasteful number, since it uses less digits than its factorization.

521452330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449333.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 521452330 is about 22835.3307398864. The cubic root of 521452330 is about 804.8930994963.

The spelling of 521452330 in words is "five hundred twenty-one million, four hundred fifty-two thousand, three hundred thirty".