523212251 has 2 divisors, whose sum is σ = 523212252. Its totient is φ = 523212250.

The previous prime is 523212241. The next prime is 523212289. The reversal of 523212251 is 152212325.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523212251 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261606125 + 261606126.

It is an arithmetic number, because the mean of its divisors is an integer number (261606126).

Almost surely, 2^523212251 is an apocalyptic number.

523212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

523212251 is an equidigital number, since it uses as much as digits as its factorization.

523212251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 523212251 is about 22873.8333254398. The cubic root of 523212251 is about 805.7975973984.

Adding to 523212251 its reverse (152212325), we get a palindrome (675424576).

The spelling of 523212251 in words is "five hundred twenty-three million, two hundred twelve thousand, two hundred fifty-one".