513242245 has 4 divisors (see below), whose sum is σ = 615890700. Its totient is φ = 410593792.

The previous prime is 513242243. The next prime is 513242251. The reversal of 513242245 is 542242315.

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 141562404 + 371679841 = 11898^2 + 19279^2 .

It is a cyclic number.

It is not a de Polignac number, because 513242245 - 2¹ = 513242243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513242243) 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, 51324220 + ... + 51324229.

It is an arithmetic number, because the mean of its divisors is an integer number (153972675).

Almost surely, 2^513242245 is an apocalyptic number.

It is an amenable number.

513242245 is a deficient number, since it is larger than the sum of its proper divisors (102648455).

513242245 is a wasteful number, since it uses less digits than its factorization.

513242245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102648454.

The product of its digits is 9600, while the sum is 28.

The square root of 513242245 is about 22654.8503636638. The cubic root of 513242245 is about 800.6464800429.

The spelling of 513242245 in words is "five hundred thirteen million, two hundred forty-two thousand, two hundred forty-five".