523571 has 2 divisors, whose sum is σ = 523572. Its totient is φ = 523570.

The previous prime is 523553. The next prime is 523573. The reversal of 523571 is 175325.

Added to its reverse (175325) it gives a square (698896 = 836²).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523571 - 2¹⁸ = 261427 is a prime.

Together with 523573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261785 + 261786.

It is an arithmetic number, because the mean of its divisors is an integer number (261786).

2⁵²³⁵⁷¹ is an apocalyptic number.

523571 is a deficient number, since it is larger than the sum of its proper divisors (1).

523571 is an equidigital number, since it uses as much as digits as its factorization.

523571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 23.

The square root of 523571 is about 723.5820616903. The cubic root of 523571 is about 80.5981724736.

Adding to 523571 its reverse (175325), we get a palindrome (698896).

It can be divided in two parts, 5 and 23571, that multiplied together give a triangular number (117855 = T₄₈₅).

The spelling of 523571 in words is "five hundred twenty-three thousand, five hundred seventy-one".