521054047 has 2 divisors, whose sum is σ = 521054048. Its totient is φ = 521054046.

The previous prime is 521054041. The next prime is 521054057. The reversal of 521054047 is 740450125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521054047 - 2¹⁹ = 520529759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521054041) 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, 260527023 + 260527024.

It is an arithmetic number, because the mean of its divisors is an integer number (260527024).

Almost surely, 2^521054047 is an apocalyptic number.

521054047 is a deficient number, since it is larger than the sum of its proper divisors (1).

521054047 is an equidigital number, since it uses as much as digits as its factorization.

521054047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 521054047 is about 22826.6083113545. The cubic root of 521054047 is about 804.6881226956.

The spelling of 521054047 in words is "five hundred twenty-one million, fifty-four thousand, forty-seven".