522138 has 16 divisors (see below), whose sum is σ = 1105920. Its totient is φ = 163776.

The previous prime is 522127. The next prime is 522157. The reversal of 522138 is 831225.

522138 = T₁₅₂ + T₁₅₃ + ... + T₁₈₇.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522138.

It is an unprimeable number.

522138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (69120).

2⁵²²¹³⁸ is an apocalyptic number.

522138 is an abundant number, since it is smaller than the sum of its proper divisors (583782).

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

522138 is a wasteful number, since it uses less digits than its factorization.

522138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141.

The product of its digits is 480, while the sum is 21.

The square root of 522138 is about 722.5911707183. The cubic root of 522138 is about 80.5245735968.

The spelling of 522138 in words is "five hundred twenty-two thousand, one hundred thirty-eight".