513513001 has 4 divisors (see below), whose sum is σ = 519282900. Its totient is φ = 507743104.

The previous prime is 513512969. The next prime is 513513017. The reversal of 513513001 is 100315315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26163225 + 487349776 = 5115^2 + 22076^2 .

It is a cyclic number.

It is not a de Polignac number, because 513513001 - 2⁵ = 513512969 is a prime.

It is a super-3 number, since 3×513513001³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513513001.

It is not an unprimeable number, because it can be changed into a prime (513513041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2884816 + ... + 2884993.

It is an arithmetic number, because the mean of its divisors is an integer number (129820725).

Almost surely, 2^513513001 is an apocalyptic number.

It is an amenable number.

513513001 is a deficient number, since it is larger than the sum of its proper divisors (5769899).

513513001 is an equidigital number, since it uses as much as digits as its factorization.

513513001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769898.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 513513001 is about 22660.8252497565. The cubic root of 513513001 is about 800.7872464039.

Adding to 513513001 its reverse (100315315), we get a palindrome (613828316).

The spelling of 513513001 in words is "five hundred thirteen million, five hundred thirteen thousand, one".