531573137 has 2 divisors, whose sum is σ = 531573138. Its totient is φ = 531573136.

The previous prime is 531573101. The next prime is 531573143. The reversal of 531573137 is 731375135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336942736 + 194630401 = 18356^2 + 13951^2 .

It is a cyclic number.

It is not a de Polignac number, because 531573137 - 2⁶ = 531573073 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 531573097 and 531573106.

It is not a weakly prime, because it can be changed into another prime (531573157) 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, 265786568 + 265786569.

It is an arithmetic number, because the mean of its divisors is an integer number (265786569).

Almost surely, 2^531573137 is an apocalyptic number.

It is an amenable number.

531573137 is a deficient number, since it is larger than the sum of its proper divisors (1).

531573137 is an equidigital number, since it uses as much as digits as its factorization.

531573137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33075, while the sum is 35.

The square root of 531573137 is about 23055.8699033457. The cubic root of 531573137 is about 810.0671269878.

The spelling of 531573137 in words is "five hundred thirty-one million, five hundred seventy-three thousand, one hundred thirty-seven".