521392 has 10 divisors (see below), whose sum is σ = 1010228. Its totient is φ = 260688.

The previous prime is 521377. The next prime is 521393. The reversal of 521392 is 293125.

It is not an unprimeable number, because it can be changed into a prime (521393) 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 as a sum of consecutive naturals, namely, 16278 + ... + 16309.

2⁵²¹³⁹² is an apocalyptic number.

It is an amenable number.

521392 is a deficient number, since it is larger than the sum of its proper divisors (488836).

521392 is a wasteful number, since it uses less digits than its factorization.

521392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595 (or 32589 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 521392 is about 722.0747883703. The cubic root of 521392 is about 80.4862057302.

It can be divided in two parts, 52 and 1392, that added together give a square (1444 = 38²).

The spelling of 521392 in words is "five hundred twenty-one thousand, three hundred ninety-two".