521076 has 24 divisors (see below), whose sum is σ = 1227744. Its totient is φ = 172000.

The previous prime is 521063. The next prime is 521107. The reversal of 521076 is 670125.

521076 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

521076 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (51156).

2⁵²¹⁰⁷⁶ is an apocalyptic number.

It is an amenable number.

521076 is an abundant number, since it is smaller than the sum of its proper divisors (706668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521076 is a wasteful number, since it uses less digits than its factorization.

521076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 521076 is about 721.8559413069. The cubic root of 521076 is about 80.4699423552.

It can be divided in two parts, 52 and 1076, that added together give a triangular number (1128 = T₄₇).

The spelling of 521076 in words is "five hundred twenty-one thousand, seventy-six".