531722 has 4 divisors (see below), whose sum is σ = 797586. Its totient is φ = 265860.

The previous prime is 531701. The next prime is 531731. The reversal of 531722 is 227135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227135 = 5 ⋅45427.

It can be written as a sum of positive squares in only one way, i.e., 519841 + 11881 = 721^2 + 109^2 .

It is a super-3 number, since 3×531722³ = 450998547923337144, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531694 and 531703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132929 + ... + 132932.

2⁵³¹⁷²² is an apocalyptic number.

531722 is a deficient number, since it is larger than the sum of its proper divisors (265864).

531722 is a wasteful number, since it uses less digits than its factorization.

531722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265863.

The product of its digits is 420, while the sum is 20.

The square root of 531722 is about 729.1927042970. The cubic root of 531722 is about 81.0142737636.

Adding to 531722 its reverse (227135), we get a palindrome (758857).

The spelling of 531722 in words is "five hundred thirty-one thousand, seven hundred twenty-two".