513335401 has 2 divisors, whose sum is σ = 513335402. Its totient is φ = 513335400.

The previous prime is 513335399. The next prime is 513335423. The reversal of 513335401 is 104533315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435807376 + 77528025 = 20876^2 + 8805^2 .

It is a cyclic number.

It is not a de Polignac number, because 513335401 - 2¹ = 513335399 is a prime.

Together with 513335399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (513338401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256667700 + 256667701.

It is an arithmetic number, because the mean of its divisors is an integer number (256667701).

Almost surely, 2^513335401 is an apocalyptic number.

It is an amenable number.

513335401 is a deficient number, since it is larger than the sum of its proper divisors (1).

513335401 is an equidigital number, since it uses as much as digits as its factorization.

513335401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 513335401 is about 22656.9062539439. The cubic root of 513335401 is about 800.6949175414.

Adding to 513335401 its reverse (104533315), we get a palindrome (617868716).

The spelling of 513335401 in words is "five hundred thirteen million, three hundred thirty-five thousand, four hundred one".