521284485 has 32 divisors (see below), whose sum is σ = 865548288. Its totient is φ = 267704640.

The previous prime is 521284469. The next prime is 521284493. The reversal of 521284485 is 584482125.

It is a happy number.

It is not a de Polignac number, because 521284485 - 2⁴ = 521284469 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40104 + ... + 51486.

It is an arithmetic number, because the mean of its divisors is an integer number (27048384).

Almost surely, 2^521284485 is an apocalyptic number.

It is an amenable number.

521284485 is a deficient number, since it is larger than the sum of its proper divisors (344263803).

521284485 is a wasteful number, since it uses less digits than its factorization.

521284485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11505.

The product of its digits is 102400, while the sum is 39.

The square root of 521284485 is about 22831.6553276367. The cubic root of 521284485 is about 804.8067306043.

The spelling of 521284485 in words is "five hundred twenty-one million, two hundred eighty-four thousand, four hundred eighty-five".