522542 has 4 divisors (see below), whose sum is σ = 783816. Its totient is φ = 261270.

The previous prime is 522541. The next prime is 522553. The reversal of 522542 is 245225.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522541) by changing a digit.

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 as a sum of consecutive naturals, namely, 130634 + ... + 130637.

It is an arithmetic number, because the mean of its divisors is an integer number (195954).

2⁵²²⁵⁴² is an apocalyptic number.

522542 is a deficient number, since it is larger than the sum of its proper divisors (261274).

522542 is a wasteful number, since it uses less digits than its factorization.

522542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261273.

The product of its digits is 800, while the sum is 20.

The square root of 522542 is about 722.8706661637. The cubic root of 522542 is about 80.5453366524.

Adding to 522542 its reverse (245225), we get a palindrome (767767).

The spelling of 522542 in words is "five hundred twenty-two thousand, five hundred forty-two".