520977447 has 16 divisors (see below), whose sum is σ = 790644960. Its totient is φ = 338846400.

The previous prime is 520977433. The next prime is 520977467. The reversal of 520977447 is 744779025.

It is not a de Polignac number, because 520977447 - 2⁶ = 520977383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520977407) 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 in 15 ways as a sum of consecutive naturals, for example, 234204 + ... + 236417.

It is an arithmetic number, because the mean of its divisors is an integer number (49415310).

Almost surely, 2^520977447 is an apocalyptic number.

520977447 is a deficient number, since it is larger than the sum of its proper divisors (269667513).

520977447 is a wasteful number, since it uses less digits than its factorization.

520977447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470671 (or 470665 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 520977447 is about 22824.9303832454. The cubic root of 520977447 is about 804.6486884428.

The spelling of 520977447 in words is "five hundred twenty million, nine hundred seventy-seven thousand, four hundred forty-seven".