513513061 has 4 divisors (see below), whose sum is σ = 518224300. Its totient is φ = 508801824.

The previous prime is 513513043. The next prime is 513513071. The reversal of 513513061 is 160315315.

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 176092900 + 337420161 = 13270^2 + 18369^2 .

It is a cyclic number.

It is not a de Polignac number, because 513513061 - 2⁵ = 513513029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513513041) 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 in 3 ways as a sum of consecutive naturals, for example, 2355456 + ... + 2355673.

It is an arithmetic number, because the mean of its divisors is an integer number (129556075).

Almost surely, 2^513513061 is an apocalyptic number.

It is an amenable number.

513513061 is a deficient number, since it is larger than the sum of its proper divisors (4711239).

513513061 is a wasteful number, since it uses less digits than its factorization.

513513061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711238.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 513513061 is about 22660.8265736270. The cubic root of 513513061 is about 800.7872775925.

Adding to 513513061 its reverse (160315315), we get a palindrome (673828376).

The spelling of 513513061 in words is "five hundred thirteen million, five hundred thirteen thousand, sixty-one".