531197 has 2 divisors, whose sum is σ = 531198. Its totient is φ = 531196.

The previous prime is 531173. The next prime is 531203. The reversal of 531197 is 791135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498436 + 32761 = 706^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 531197 - 2⁶ = 531133 is a prime.

It is a Chen prime.

It is equal to p₄₃₉₁₉ and since 531197 and 43919 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265598 + 265599.

It is an arithmetic number, because the mean of its divisors is an integer number (265599).

531197 is a Friedman number, since it can be written as 9^(7-1)-3^5-1, using all its digits and the basic arithmetic operations.

2⁵³¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

531197 is a deficient number, since it is larger than the sum of its proper divisors (1).

531197 is an equidigital number, since it uses as much as digits as its factorization.

531197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 26.

The square root of 531197 is about 728.8326282488. The cubic root of 531197 is about 80.9876016180.

The spelling of 531197 in words is "five hundred thirty-one thousand, one hundred ninety-seven".