521485964 has 12 divisors (see below), whose sum is σ = 914771088. Its totient is φ = 260122800.

The previous prime is 521485961. The next prime is 521485967. The reversal of 521485964 is 469584125.

It is an interprime number because it is at equal distance from previous prime (521485961) and next prime (521485967).

It is a super-2 number, since 2×521485964² = 543895221298018592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521485961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153152 + ... + 156519.

It is an arithmetic number, because the mean of its divisors is an integer number (76230924).

Almost surely, 2^521485964 is an apocalyptic number.

It is an amenable number.

521485964 is a deficient number, since it is larger than the sum of its proper divisors (393285124).

521485964 is a wasteful number, since it uses less digits than its factorization.

521485964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310096 (or 310094 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 521485964 is about 22836.0671745377. The cubic root of 521485964 is about 804.9104044930.

The spelling of 521485964 in words is "five hundred twenty-one million, four hundred eighty-five thousand, nine hundred sixty-four".