521488895 has 16 divisors (see below), whose sum is σ = 631828512. Its totient is φ = 413184000.

The previous prime is 521488879. The next prime is 521488909. The reversal of 521488895 is 598884125.

It is not a de Polignac number, because 521488895 - 2⁴ = 521488879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 241139 + ... + 243291.

It is an arithmetic number, because the mean of its divisors is an integer number (39489282).

Almost surely, 2^521488895 is an apocalyptic number.

521488895 is a deficient number, since it is larger than the sum of its proper divisors (110339617).

521488895 is a wasteful number, since it uses less digits than its factorization.

521488895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602.

The product of its digits is 921600, while the sum is 50.

The square root of 521488895 is about 22836.1313492457. The cubic root of 521488895 is about 804.9119124837.

The spelling of 521488895 in words is "five hundred twenty-one million, four hundred eighty-eight thousand, eight hundred ninety-five".