524530621 has 2 divisors, whose sum is σ = 524530622. Its totient is φ = 524530620.

The previous prime is 524530609. The next prime is 524530679. The reversal of 524530621 is 126035425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296218521 + 228312100 = 17211^2 + 15110^2 .

It is a cyclic number.

It is not a de Polignac number, because 524530621 - 2⁹ = 524530109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 524530621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524530021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262265310 + 262265311.

It is an arithmetic number, because the mean of its divisors is an integer number (262265311).

Almost surely, 2^524530621 is an apocalyptic number.

It is an amenable number.

524530621 is a deficient number, since it is larger than the sum of its proper divisors (1).

524530621 is an equidigital number, since it uses as much as digits as its factorization.

524530621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 524530621 is about 22902.6334948626. The cubic root of 524530621 is about 806.4738356063.

The spelling of 524530621 in words is "five hundred twenty-four million, five hundred thirty thousand, six hundred twenty-one".