513121051 has 2 divisors, whose sum is σ = 513121052. Its totient is φ = 513121050.

The previous prime is 513121031. The next prime is 513121079. The reversal of 513121051 is 150121315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513121051 - 2⁹ = 513120539 is a prime.

It is not a weakly prime, because it can be changed into another prime (513121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256560525 + 256560526.

It is an arithmetic number, because the mean of its divisors is an integer number (256560526).

Almost surely, 2^513121051 is an apocalyptic number.

513121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

513121051 is an equidigital number, since it uses as much as digits as its factorization.

513121051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 513121051 is about 22652.1754142952. The cubic root of 513121051 is about 800.5834551009.

Adding to 513121051 its reverse (150121315), we get a palindrome (663242366).

The spelling of 513121051 in words is "five hundred thirteen million, one hundred twenty-one thousand, fifty-one".