521032230 has 32 divisors (see below), whose sum is σ = 1389420000. Its totient is φ = 138941856.

The previous prime is 521032207. The next prime is 521032243. The reversal of 521032230 is 32230125.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964605 + ... + 965144.

It is an arithmetic number, because the mean of its divisors is an integer number (43419375).

Almost surely, 2^521032230 is an apocalyptic number.

521032230 is an abundant number, since it is smaller than the sum of its proper divisors (868387770).

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

521032230 is a wasteful number, since it uses less digits than its factorization.

521032230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929765 (or 1929759 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 521032230 is about 22826.1304210766. The cubic root of 521032230 is about 804.6768915345.

Adding to 521032230 its reverse (32230125), we get a palindrome (553262355).

The spelling of 521032230 in words is "five hundred twenty-one million, thirty-two thousand, two hundred thirty".