575025821 has 2 divisors, whose sum is σ = 575025822. Its totient is φ = 575025820.

The previous prime is 575025817. The next prime is 575025889. The reversal of 575025821 is 128520575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295668025 + 279357796 = 17195^2 + 16714^2 .

It is a cyclic number.

It is not a de Polignac number, because 575025821 - 2² = 575025817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575027821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287512910 + 287512911.

It is an arithmetic number, because the mean of its divisors is an integer number (287512911).

Almost surely, 2^575025821 is an apocalyptic number.

It is an amenable number.

575025821 is a deficient number, since it is larger than the sum of its proper divisors (1).

575025821 is an equidigital number, since it uses as much as digits as its factorization.

575025821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 575025821 is about 23979.6960155879. The cubic root of 575025821 is about 831.5641964791.

The spelling of 575025821 in words is "five hundred seventy-five million, twenty-five thousand, eight hundred twenty-one".