531292393 has 2 divisors, whose sum is σ = 531292394. Its totient is φ = 531292392.

The previous prime is 531292373. The next prime is 531292397. The reversal of 531292393 is 393292135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359367849 + 171924544 = 18957^2 + 13112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531292393 is a prime.

It is not a weakly prime, because it can be changed into another prime (531292397) 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 as a sum of consecutive naturals, namely, 265646196 + 265646197.

It is an arithmetic number, because the mean of its divisors is an integer number (265646197).

Almost surely, 2^531292393 is an apocalyptic number.

It is an amenable number.

531292393 is a deficient number, since it is larger than the sum of its proper divisors (1).

531292393 is an equidigital number, since it uses as much as digits as its factorization.

531292393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 37.

The square root of 531292393 is about 23049.7807581764. The cubic root of 531292393 is about 809.9244927837.

The spelling of 531292393 in words is "five hundred thirty-one million, two hundred ninety-two thousand, three hundred ninety-three".