523540330 has 16 divisors (see below), whose sum is σ = 997806600. Its totient is φ = 197097472.

The previous prime is 523540327. The next prime is 523540333. The reversal of 523540330 is 33045325.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (523540327) and next prime (523540333).

It can be written as a sum of positive squares in 4 ways, for example, as 407353489 + 116186841 = 20183^2 + 10779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 523540295 and 523540304.

It is not an unprimeable number, because it can be changed into a prime (523540333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539655 + ... + 1539994.

Almost surely, 2^523540330 is an apocalyptic number.

523540330 is a deficient number, since it is larger than the sum of its proper divisors (474266270).

523540330 is a wasteful number, since it uses less digits than its factorization.

523540330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079673.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 523540330 is about 22881.0036930201. The cubic root of 523540330 is about 805.9659866975.

Adding to 523540330 its reverse (33045325), we get a palindrome (556585655).

The spelling of 523540330 in words is "five hundred twenty-three million, five hundred forty thousand, three hundred thirty".