531224442 has 24 divisors (see below), whose sum is σ = 1315413216. Its totient is φ = 151778376.

The previous prime is 531224359. The next prime is 531224453. The reversal of 531224442 is 244422135.

It is a super-2 number, since 2×531224442² = 564398815556422728, which contains 22 as substring.

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, 2107908 + ... + 2108159.

It is an arithmetic number, because the mean of its divisors is an integer number (54808884).

Almost surely, 2^531224442 is an apocalyptic number.

531224442 is an abundant number, since it is smaller than the sum of its proper divisors (784188774).

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

531224442 is a wasteful number, since it uses less digits than its factorization.

531224442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216082 (or 4216079 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 531224442 is about 23048.3067056997. The cubic root of 531224442 is about 809.8899621898.

Adding to 531224442 its reverse (244422135), we get a palindrome (775646577).

The spelling of 531224442 in words is "five hundred thirty-one million, two hundred twenty-four thousand, four hundred forty-two".