575342821 has 2 divisors, whose sum is σ = 575342822. Its totient is φ = 575342820.

The previous prime is 575342771. The next prime is 575342837. The reversal of 575342821 is 128243575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355888225 + 219454596 = 18865^2 + 14814^2 .

It is a cyclic number.

It is not a de Polignac number, because 575342821 - 2⁷ = 575342693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575342321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287671410 + 287671411.

It is an arithmetic number, because the mean of its divisors is an integer number (287671411).

Almost surely, 2^575342821 is an apocalyptic number.

It is an amenable number.

575342821 is a deficient number, since it is larger than the sum of its proper divisors (1).

575342821 is an equidigital number, since it uses as much as digits as its factorization.

575342821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 575342821 is about 23986.3048634007. The cubic root of 575342821 is about 831.7169765314.

It can be divided in two parts, 575 and 342821, that added together give a square (343396 = 586²).

The spelling of 575342821 in words is "five hundred seventy-five million, three hundred forty-two thousand, eight hundred twenty-one".