575534621 has 2 divisors, whose sum is σ = 575534622. Its totient is φ = 575534620.

The previous prime is 575534587. The next prime is 575534627. The reversal of 575534621 is 126435575.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575472121 + 62500 = 23989^2 + 250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-575534621 is a prime.

It is a super-2 number, since 2×575534621² = 662480199939227282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575534627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287767310 + 287767311.

It is an arithmetic number, because the mean of its divisors is an integer number (287767311).

Almost surely, 2^575534621 is an apocalyptic number.

It is an amenable number.

575534621 is a deficient number, since it is larger than the sum of its proper divisors (1).

575534621 is an equidigital number, since it uses as much as digits as its factorization.

575534621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 575534621 is about 23990.3026450272. The cubic root of 575534621 is about 831.8093884448.

The spelling of 575534621 in words is "five hundred seventy-five million, five hundred thirty-four thousand, six hundred twenty-one".