523050721 has 2 divisors, whose sum is σ = 523050722. Its totient is φ = 523050720.

The previous prime is 523050707. The next prime is 523050739. The reversal of 523050721 is 127050325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270240721 + 252810000 = 16439^2 + 15900^2 .

It is a cyclic number.

It is not a de Polignac number, because 523050721 - 2¹³ = 523042529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (523050701) 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, 261525360 + 261525361.

It is an arithmetic number, because the mean of its divisors is an integer number (261525361).

Almost surely, 2^523050721 is an apocalyptic number.

It is an amenable number.

523050721 is a deficient number, since it is larger than the sum of its proper divisors (1).

523050721 is an equidigital number, since it uses as much as digits as its factorization.

523050721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 523050721 is about 22870.3021624114. The cubic root of 523050721 is about 805.7146649093.

The spelling of 523050721 in words is "five hundred twenty-three million, fifty thousand, seven hundred twenty-one".