521996 has 12 divisors (see below), whose sum is σ = 938448. Its totient is φ = 253872.

The previous prime is 521993. The next prime is 521999. The reversal of 521996 is 699125.

It is an interprime number because it is at equal distance from previous prime (521993) and next prime (521999).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521996.

It is not an unprimeable number, because it can be changed into a prime (521993) 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, 1616 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (78204).

2⁵²¹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

521996 is a deficient number, since it is larger than the sum of its proper divisors (416452).

521996 is a wasteful number, since it uses less digits than its factorization.

521996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568 (or 3566 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 521996 is about 722.4929065396. The cubic root of 521996 is about 80.5172731474.

It can be divided in two parts, 52 and 1996, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 521996 in words is "five hundred twenty-one thousand, nine hundred ninety-six".