523051813 has 2 divisors, whose sum is σ = 523051814. Its totient is φ = 523051812.

The previous prime is 523051787. The next prime is 523051829. The reversal of 523051813 is 318150325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441294049 + 81757764 = 21007^2 + 9042^2 .

It is a cyclic number.

It is not a de Polignac number, because 523051813 - 2²¹ = 520954661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523051873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261525906 + 261525907.

It is an arithmetic number, because the mean of its divisors is an integer number (261525907).

Almost surely, 2^523051813 is an apocalyptic number.

It is an amenable number.

523051813 is a deficient number, since it is larger than the sum of its proper divisors (1).

523051813 is an equidigital number, since it uses as much as digits as its factorization.

523051813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 523051813 is about 22870.3260361544. The cubic root of 523051813 is about 805.7152256196.

The spelling of 523051813 in words is "five hundred twenty-three million, fifty-one thousand, eight hundred thirteen".