571521253 has 2 divisors, whose sum is σ = 571521254. Its totient is φ = 571521252.

The previous prime is 571521233. The next prime is 571521271. The reversal of 571521253 is 352125175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470759809 + 100761444 = 21697^2 + 10038^2 .

It is a cyclic number.

It is not a de Polignac number, because 571521253 - 2⁵ = 571521221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (571521233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285760626 + 285760627.

It is an arithmetic number, because the mean of its divisors is an integer number (285760627).

Almost surely, 2^571521253 is an apocalyptic number.

It is an amenable number.

571521253 is a deficient number, since it is larger than the sum of its proper divisors (1).

571521253 is an equidigital number, since it uses as much as digits as its factorization.

571521253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 31.

The square root of 571521253 is about 23906.5106822388. The cubic root of 571521253 is about 829.8713948901.

The spelling of 571521253 in words is "five hundred seventy-one million, five hundred twenty-one thousand, two hundred fifty-three".