513422243 has 2 divisors, whose sum is σ = 513422244. Its totient is φ = 513422242.

The previous prime is 513422233. The next prime is 513422269. The reversal of 513422243 is 342224315.

It is an a-pointer prime, because the next prime (513422269) can be obtained adding 513422243 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513422243 - 2⁶ = 513422179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (513422233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256711121 + 256711122.

It is an arithmetic number, because the mean of its divisors is an integer number (256711122).

Almost surely, 2^513422243 is an apocalyptic number.

513422243 is a deficient number, since it is larger than the sum of its proper divisors (1).

513422243 is an equidigital number, since it uses as much as digits as its factorization.

513422243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 26.

The square root of 513422243 is about 22658.8226304899. The cubic root of 513422243 is about 800.7400667279.

Adding to 513422243 its reverse (342224315), we get a palindrome (855646558).

The spelling of 513422243 in words is "five hundred thirteen million, four hundred twenty-two thousand, two hundred forty-three".