520948405 has 16 divisors (see below), whose sum is σ = 632582784. Its totient is φ = 411812800.

The previous prime is 520948399. The next prime is 520948409. The reversal of 520948405 is 504849025.

It is not a de Polignac number, because 520948405 - 2²¹ = 518851253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520948409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447354 + ... + 448516.

It is an arithmetic number, because the mean of its divisors is an integer number (39536424).

Almost surely, 2^520948405 is an apocalyptic number.

It is an amenable number.

520948405 is a deficient number, since it is larger than the sum of its proper divisors (111634379).

520948405 is a wasteful number, since it uses less digits than its factorization.

520948405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 520948405 is about 22824.2941840487. The cubic root of 520948405 is about 804.6337363935.

The spelling of 520948405 in words is "five hundred twenty million, nine hundred forty-eight thousand, four hundred five".