521492 has 12 divisors (see below), whose sum is σ = 966420. Its totient is φ = 245376.

The previous prime is 521491. The next prime is 521497. The reversal of 521492 is 294125.

It can be written as a sum of positive squares in 2 ways, for example, as 456976 + 64516 = 676^2 + 254^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767 + ... + 3902.

It is an arithmetic number, because the mean of its divisors is an integer number (80535).

2⁵²¹⁴⁹² is an apocalyptic number.

It is an amenable number.

521492 is a deficient number, since it is larger than the sum of its proper divisors (444928).

521492 is a wasteful number, since it uses less digits than its factorization.

521492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690 (or 7688 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 521492 is about 722.1440299552. The cubic root of 521492 is about 80.4913509991.

The spelling of 521492 in words is "five hundred twenty-one thousand, four hundred ninety-two".