524234021 has 2 divisors, whose sum is σ = 524234022. Its totient is φ = 524234020.

The previous prime is 524233999. The next prime is 524234069. The reversal of 524234021 is 120432425.

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., 321484900 + 202749121 = 17930^2 + 14239^2 .

It is a cyclic number.

It is not a de Polignac number, because 524234021 - 2²² = 520039717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524224021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262117010 + 262117011.

It is an arithmetic number, because the mean of its divisors is an integer number (262117011).

Almost surely, 2^524234021 is an apocalyptic number.

It is an amenable number.

524234021 is a deficient number, since it is larger than the sum of its proper divisors (1).

524234021 is an equidigital number, since it uses as much as digits as its factorization.

524234021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 524234021 is about 22896.1573413532. The cubic root of 524234021 is about 806.3217979368.

Adding to 524234021 its reverse (120432425), we get a palindrome (644666446).

The spelling of 524234021 in words is "five hundred twenty-four million, two hundred thirty-four thousand, twenty-one".