513302245 has 16 divisors (see below), whose sum is σ = 622203120. Its totient is φ = 406503424.

The previous prime is 513302243. The next prime is 513302261. The reversal of 513302245 is 542203315.

513302245 = 400² + 401² + ... + 1170².

It can be written as a sum of positive squares in 8 ways, for example, as 204175521 + 309126724 = 14289^2 + 17582^2 .

It is a cyclic number.

It is not a de Polignac number, because 513302245 - 2¹ = 513302243 is a prime.

It is a super-3 number, since 3×513302245³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513302243) 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 15 ways as a sum of consecutive naturals, for example, 221151 + ... + 223459.

It is an arithmetic number, because the mean of its divisors is an integer number (38887695).

Almost surely, 2^513302245 is an apocalyptic number.

It is an amenable number.

513302245 is a deficient number, since it is larger than the sum of its proper divisors (108900875).

513302245 is a wasteful number, since it uses less digits than its factorization.

513302245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 513302245 is about 22656.1745447019. The cubic root of 513302245 is about 800.6776783821.

The spelling of 513302245 in words is "five hundred thirteen million, three hundred two thousand, two hundred forty-five".