575042661 has 12 divisors (see below), whose sum is σ = 833274988. Its totient is φ = 382135104.

The previous prime is 575042609. The next prime is 575042693. The reversal of 575042661 is 166240575.

It is a happy number.

575042661 is a `hidden beast` number, since 575 + 0 + 4 + 26 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13068225 + 561974436 = 3615^2 + 23706^2 .

It is a de Polignac number, because none of the positive numbers 2^k-575042661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575043661) 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 in 11 ways as a sum of consecutive naturals, for example, 99250 + ... + 104883.

Almost surely, 2^575042661 is an apocalyptic number.

It is an amenable number.

575042661 is a deficient number, since it is larger than the sum of its proper divisors (258232327).

575042661 is a wasteful number, since it uses less digits than its factorization.

575042661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204452 (or 204449 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 575042661 is about 23980.0471434065. The cubic root of 575042661 is about 831.5723140302.

The spelling of 575042661 in words is "five hundred seventy-five million, forty-two thousand, six hundred sixty-one".