521074573 has 2 divisors, whose sum is σ = 521074574. Its totient is φ = 521074572.

The previous prime is 521074529. The next prime is 521074577. The reversal of 521074573 is 375470125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520661124 + 413449 = 22818^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 521074573 - 2²¹ = 518977421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521074577) 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, 260537286 + 260537287.

It is an arithmetic number, because the mean of its divisors is an integer number (260537287).

Almost surely, 2^521074573 is an apocalyptic number.

It is an amenable number.

521074573 is a deficient number, since it is larger than the sum of its proper divisors (1).

521074573 is an equidigital number, since it uses as much as digits as its factorization.

521074573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 521074573 is about 22827.0579138005. The cubic root of 521074573 is about 804.6986889773.

The spelling of 521074573 in words is "five hundred twenty-one million, seventy-four thousand, five hundred seventy-three".