511825213 has 2 divisors, whose sum is σ = 511825214. Its totient is φ = 511825212.

The previous prime is 511825207. The next prime is 511825217. The reversal of 511825213 is 312528115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492928804 + 18896409 = 22202^2 + 4347^2 .

It is a cyclic number.

It is not a de Polignac number, because 511825213 - 2⁹ = 511824701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511825217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255912606 + 255912607.

It is an arithmetic number, because the mean of its divisors is an integer number (255912607).

Almost surely, 2^511825213 is an apocalyptic number.

It is an amenable number.

511825213 is a deficient number, since it is larger than the sum of its proper divisors (1).

511825213 is an equidigital number, since it uses as much as digits as its factorization.

511825213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 28.

The square root of 511825213 is about 22623.5543847557. The cubic root of 511825213 is about 799.9089547430.

The spelling of 511825213 in words is "five hundred eleven million, eight hundred twenty-five thousand, two hundred thirteen".