523245551 has 2 divisors, whose sum is σ = 523245552. Its totient is φ = 523245550.

The previous prime is 523245523. The next prime is 523245563. The reversal of 523245551 is 155542325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523245551 - 2⁶ = 523245487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523245511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261622775 + 261622776.

It is an arithmetic number, because the mean of its divisors is an integer number (261622776).

Almost surely, 2^523245551 is an apocalyptic number.

523245551 is a deficient number, since it is larger than the sum of its proper divisors (1).

523245551 is an equidigital number, since it uses as much as digits as its factorization.

523245551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30000, while the sum is 32.

The square root of 523245551 is about 22874.5612198355. The cubic root of 523245551 is about 805.8146921120.

Adding to 523245551 its reverse (155542325), we get a palindrome (678787876).

It can be divided in two parts, 52324 and 5551, that added together give a palindrome (57875).

The spelling of 523245551 in words is "five hundred twenty-three million, two hundred forty-five thousand, five hundred fifty-one".