523144409 has 2 divisors, whose sum is σ = 523144410. Its totient is φ = 523144408.

The previous prime is 523144373. The next prime is 523144411. The reversal of 523144409 is 904441325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481670809 + 41473600 = 21947^2 + 6440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523144409 is a prime.

Together with 523144411, 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 (523144429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261572204 + 261572205.

It is an arithmetic number, because the mean of its divisors is an integer number (261572205).

Almost surely, 2^523144409 is an apocalyptic number.

It is an amenable number.

523144409 is a deficient number, since it is larger than the sum of its proper divisors (1).

523144409 is an equidigital number, since it uses as much as digits as its factorization.

523144409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 523144409 is about 22872.3503164847. The cubic root of 523144409 is about 805.7627681403.

The spelling of 523144409 in words is "five hundred twenty-three million, one hundred forty-four thousand, four hundred nine".