509262493 has 2 divisors, whose sum is σ = 509262494. Its totient is φ = 509262492.

The previous prime is 509262463. The next prime is 509262547. The reversal of 509262493 is 394262905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293848164 + 215414329 = 17142^2 + 14677^2 .

It is a cyclic number.

It is not a de Polignac number, because 509262493 - 2¹³ = 509254301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509262463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254631246 + 254631247.

It is an arithmetic number, because the mean of its divisors is an integer number (254631247).

Almost surely, 2^509262493 is an apocalyptic number.

It is an amenable number.

509262493 is a deficient number, since it is larger than the sum of its proper divisors (1).

509262493 is an equidigital number, since it uses as much as digits as its factorization.

509262493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 509262493 is about 22566.8449943717. The cubic root of 509262493 is about 798.5716664510.

The spelling of 509262493 in words is "five hundred nine million, two hundred sixty-two thousand, four hundred ninety-three".