509031097 has 2 divisors, whose sum is σ = 509031098. Its totient is φ = 509031096.

The previous prime is 509031073. The next prime is 509031137. The reversal of 509031097 is 790130905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273439296 + 235591801 = 16536^2 + 15349^2 .

It is a cyclic number.

It is not a de Polignac number, because 509031097 - 2¹⁹ = 508506809 is a prime.

It is a super-2 number, since 2×509031097² = 518225315426046818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (509031797) 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, 254515548 + 254515549.

It is an arithmetic number, because the mean of its divisors is an integer number (254515549).

Almost surely, 2^509031097 is an apocalyptic number.

It is an amenable number.

509031097 is a deficient number, since it is larger than the sum of its proper divisors (1).

509031097 is an equidigital number, since it uses as much as digits as its factorization.

509031097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 509031097 is about 22561.7175099769. The cubic root of 509031097 is about 798.4506978697.

The spelling of 509031097 in words is "five hundred nine million, thirty-one thousand, ninety-seven".