510393421 has 2 divisors, whose sum is σ = 510393422. Its totient is φ = 510393420.

The previous prime is 510393413. The next prime is 510393451. The reversal of 510393421 is 124393015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502208100 + 8185321 = 22410^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 510393421 - 2³ = 510393413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 510393421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510393451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255196710 + 255196711.

It is an arithmetic number, because the mean of its divisors is an integer number (255196711).

Almost surely, 2^510393421 is an apocalyptic number.

It is an amenable number.

510393421 is a deficient number, since it is larger than the sum of its proper divisors (1).

510393421 is an equidigital number, since it uses as much as digits as its factorization.

510393421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 510393421 is about 22591.8883894198. Note that the first 3 decimals coincide. The cubic root of 510393421 is about 799.1623633664.

The spelling of 510393421 in words is "five hundred ten million, three hundred ninety-three thousand, four hundred twenty-one".