531422 has 4 divisors (see below), whose sum is σ = 797136. Its totient is φ = 265710.

The previous prime is 531383. The next prime is 531457. The reversal of 531422 is 224135.

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

It is a self number, because there is not a number n which added to its sum of digits gives 531422.

It is a congruent number.

It is an unprimeable number.

531422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 132854 + ... + 132857.

It is an arithmetic number, because the mean of its divisors is an integer number (199284).

531422 is a Friedman number, since it can be written as 5-24+3^12, using all its digits and the basic arithmetic operations.

2⁵³¹⁴²² is an apocalyptic number.

531422 is a deficient number, since it is larger than the sum of its proper divisors (265714).

531422 is a wasteful number, since it uses less digits than its factorization.

531422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265713.

The product of its digits is 240, while the sum is 17.

The square root of 531422 is about 728.9869683335. The cubic root of 531422 is about 80.9990346885. Note that the first 3 decimals are identical.

Adding to 531422 its reverse (224135), we get a palindrome (755557).

The spelling of 531422 in words is "five hundred thirty-one thousand, four hundred twenty-two".