523755949 has 2 divisors, whose sum is σ = 523755950. Its totient is φ = 523755948.

The previous prime is 523755923. The next prime is 523755961. The reversal of 523755949 is 949557325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372219849 + 151536100 = 19293^2 + 12310^2 .

It is a cyclic number.

It is not a de Polignac number, because 523755949 - 2⁵ = 523755917 is a prime.

It is a super-2 number, since 2×523755949² = 548640588225781202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523755989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261877974 + 261877975.

It is an arithmetic number, because the mean of its divisors is an integer number (261877975).

Almost surely, 2^523755949 is an apocalyptic number.

It is an amenable number.

523755949 is a deficient number, since it is larger than the sum of its proper divisors (1).

523755949 is an equidigital number, since it uses as much as digits as its factorization.

523755949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701000, while the sum is 49.

The square root of 523755949 is about 22885.7149549670. The cubic root of 523755949 is about 806.0766166518.

The spelling of 523755949 in words is "five hundred twenty-three million, seven hundred fifty-five thousand, nine hundred forty-nine".