513212071 has 2 divisors, whose sum is σ = 513212072. Its totient is φ = 513212070.

The previous prime is 513212057. The next prime is 513212081. The reversal of 513212071 is 170212315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513212071 - 2¹³ = 513203879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513212081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256606035 + 256606036.

It is an arithmetic number, because the mean of its divisors is an integer number (256606036).

Almost surely, 2^513212071 is an apocalyptic number.

513212071 is a deficient number, since it is larger than the sum of its proper divisors (1).

513212071 is an equidigital number, since it uses as much as digits as its factorization.

513212071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 513212071 is about 22654.1844037696. The cubic root of 513212071 is about 800.6307894792.

Adding to 513212071 its reverse (170212315), we get a palindrome (683424386).

The spelling of 513212071 in words is "five hundred thirteen million, two hundred twelve thousand, seventy-one".