515212001 has 2 divisors, whose sum is σ = 515212002. Its totient is φ = 515212000.

The previous prime is 515211989. The next prime is 515212031. The reversal of 515212001 is 100212515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498360976 + 16851025 = 22324^2 + 4105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515212001 is a prime.

It is not a weakly prime, because it can be changed into another prime (515212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257606000 + 257606001.

It is an arithmetic number, because the mean of its divisors is an integer number (257606001).

Almost surely, 2^515212001 is an apocalyptic number.

It is an amenable number.

515212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

515212001 is an equidigital number, since it uses as much as digits as its factorization.

515212001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 515212001 is about 22698.2818953330. The cubic root of 515212001 is about 801.6694310143.

Adding to 515212001 its reverse (100212515), we get a palindrome (615424516).

The spelling of 515212001 in words is "five hundred fifteen million, two hundred twelve thousand, one".