521542232 has 32 divisors (see below), whose sum is σ = 1007267520. Its totient is φ = 252979200.

The previous prime is 521542213. The next prime is 521542237. The reversal of 521542232 is 232245125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521542237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106232 + ... + 111032.

It is an arithmetic number, because the mean of its divisors is an integer number (31477110).

Almost surely, 2^521542232 is an apocalyptic number.

It is an amenable number.

521542232 is a deficient number, since it is larger than the sum of its proper divisors (485725288).

521542232 is a wasteful number, since it uses less digits than its factorization.

521542232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211 (or 5207 counting only the distinct ones).

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

The square root of 521542232 is about 22837.2991397845. The cubic root of 521542232 is about 804.9393532234.

Adding to 521542232 its reverse (232245125), we get a palindrome (753787357).

The spelling of 521542232 in words is "five hundred twenty-one million, five hundred forty-two thousand, two hundred thirty-two".