522417 has 8 divisors (see below), whose sum is σ = 796096. Its totient is φ = 298512.

The previous prime is 522413. The next prime is 522439. The reversal of 522417 is 714225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 522417 - 2² = 522413 is a prime.

It is a super-3 number, since 3×522417³ = 427733393600057139, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 24877 = 522417 / (5 + 2 + 2 + 4 + 1 + 7).

It is an Ulam number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 522393 and 522402.

It is not an unprimeable number, because it can be changed into a prime (522413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12418 + ... + 12459.

It is an arithmetic number, because the mean of its divisors is an integer number (99512).

2⁵²²⁴¹⁷ is an apocalyptic number.

It is an amenable number.

522417 is a deficient number, since it is larger than the sum of its proper divisors (273679).

522417 is a wasteful number, since it uses less digits than its factorization.

522417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24887.

The product of its digits is 560, while the sum is 21.

The square root of 522417 is about 722.7842001594. The cubic root of 522417 is about 80.5389135834.

It can be divided in two parts, 522 and 417, that added together give a palindrome (939).

The spelling of 522417 in words is "five hundred twenty-two thousand, four hundred seventeen".