531740670557 has 2 divisors, whose sum is σ = 531740670558. Its totient is φ = 531740670556.

The previous prime is 531740670523. The next prime is 531740670581. The reversal of 531740670557 is 755076047135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383961165316 + 147779505241 = 619646^2 + 384421^2 .

It is a cyclic number.

It is not a de Polignac number, because 531740670557 - 2⁶ = 531740670493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531740660557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265870335278 + 265870335279.

It is an arithmetic number, because the mean of its divisors is an integer number (265870335279).

Almost surely, 2^531740670557 is an apocalyptic number.

It is an amenable number.

531740670557 is a deficient number, since it is larger than the sum of its proper divisors (1).

531740670557 is an equidigital number, since it uses as much as digits as its factorization.

531740670557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3087000, while the sum is 50.

The spelling of 531740670557 in words is "five hundred thirty-one billion, seven hundred forty million, six hundred seventy thousand, five hundred fifty-seven".