513657242 has 16 divisors (see below), whose sum is σ = 893699520. Its totient is φ = 216852768.

The previous prime is 513657233. The next prime is 513657247. The reversal of 513657242 is 242756315.

It is not an unprimeable number, because it can be changed into a prime (513657247) 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 7 ways as a sum of consecutive naturals, for example, 272867 + ... + 274742.

It is an arithmetic number, because the mean of its divisors is an integer number (55856220).

Almost surely, 2^513657242 is an apocalyptic number.

513657242 is a deficient number, since it is larger than the sum of its proper divisors (380042278).

513657242 is a wasteful number, since it uses less digits than its factorization.

513657242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547685.

The product of its digits is 50400, while the sum is 35.

The square root of 513657242 is about 22664.0076332497. The cubic root of 513657242 is about 800.8622172679.

The spelling of 513657242 in words is "five hundred thirteen million, six hundred fifty-seven thousand, two hundred forty-two".