531424657 has 4 divisors (see below), whose sum is σ = 544386276. Its totient is φ = 518463040.

The previous prime is 531424651. The next prime is 531424667. The reversal of 531424657 is 756424135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756424135 = 5 ⋅151284827.

It can be written as a sum of positive squares in 2 ways, for example, as 282542481 + 248882176 = 16809^2 + 15776^2 .

It is a de Polignac number, because none of the positive numbers 2^k-531424657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531424651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6480748 + ... + 6480829.

It is an arithmetic number, because the mean of its divisors is an integer number (136096569).

Almost surely, 2^531424657 is an apocalyptic number.

It is an amenable number.

531424657 is a deficient number, since it is larger than the sum of its proper divisors (12961619).

531424657 is a wasteful number, since it uses less digits than its factorization.

531424657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12961618.

The product of its digits is 100800, while the sum is 37.

The square root of 531424657 is about 23052.6496741698. The cubic root of 531424657 is about 809.9916968107.

The spelling of 531424657 in words is "five hundred thirty-one million, four hundred twenty-four thousand, six hundred fifty-seven".