521445230 has 24 divisors (see below), whose sum is σ = 972098712. Its totient is φ = 201382496.

The previous prime is 521445179. The next prime is 521445241. The reversal of 521445230 is 32544125.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 521445230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22592 + ... + 39411.

It is an arithmetic number, because the mean of its divisors is an integer number (40504113).

Almost surely, 2^521445230 is an apocalyptic number.

521445230 is a deficient number, since it is larger than the sum of its proper divisors (450653482).

521445230 is a wasteful number, since it uses less digits than its factorization.

521445230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62068 (or 62039 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 521445230 is about 22835.1752785040. The cubic root of 521445230 is about 804.8894463871.

Adding to 521445230 its reverse (32544125), we get a palindrome (553989355).

The spelling of 521445230 in words is "five hundred twenty-one million, four hundred forty-five thousand, two hundred thirty".