524044021 has 2 divisors, whose sum is σ = 524044022. Its totient is φ = 524044020.

The previous prime is 524044009. The next prime is 524044063. The reversal of 524044021 is 120440425.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487923921 + 36120100 = 22089^2 + 6010^2 .

It is a cyclic number.

It is not a de Polignac number, because 524044021 - 2¹⁵ = 524011253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 524043983 and 524044001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524044621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262022010 + 262022011.

It is an arithmetic number, because the mean of its divisors is an integer number (262022011).

Almost surely, 2^524044021 is an apocalyptic number.

It is an amenable number.

524044021 is a deficient number, since it is larger than the sum of its proper divisors (1).

524044021 is an equidigital number, since it uses as much as digits as its factorization.

524044021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 524044021 is about 22892.0077974825. The cubic root of 524044021 is about 806.2243734739.

Adding to 524044021 its reverse (120440425), we get a palindrome (644484446).

The spelling of 524044021 in words is "five hundred twenty-four million, forty-four thousand, twenty-one".