573565381 has 2 divisors, whose sum is σ = 573565382. Its totient is φ = 573565380.

The previous prime is 573565351. The next prime is 573565387. The reversal of 573565381 is 183565375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459716481 + 113848900 = 21441^2 + 10670^2 .

It is a cyclic number.

It is not a de Polignac number, because 573565381 - 2¹³ = 573557189 is a prime.

It is a super-2 number, since 2×573565381² = 657954492563350322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (573565387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286782690 + 286782691.

It is an arithmetic number, because the mean of its divisors is an integer number (286782691).

Almost surely, 2^573565381 is an apocalyptic number.

It is an amenable number.

573565381 is a deficient number, since it is larger than the sum of its proper divisors (1).

573565381 is an equidigital number, since it uses as much as digits as its factorization.

573565381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 43.

The square root of 573565381 is about 23949.2250605317. The cubic root of 573565381 is about 830.8596024885.

The spelling of 573565381 in words is "five hundred seventy-three million, five hundred sixty-five thousand, three hundred eighty-one".