513355538 has 16 divisors (see below), whose sum is σ = 825232320. Its totient is φ = 238881456.

The previous prime is 513355537. The next prime is 513355597. The reversal of 513355538 is 835553315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (513355537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149108 + ... + 152511.

It is an arithmetic number, because the mean of its divisors is an integer number (51577020).

Almost surely, 2^513355538 is an apocalyptic number.

513355538 is a deficient number, since it is larger than the sum of its proper divisors (311876782).

513355538 is a wasteful number, since it uses less digits than its factorization.

513355538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301681.

The product of its digits is 135000, while the sum is 38.

The square root of 513355538 is about 22657.3506394724. The cubic root of 513355538 is about 800.7053872283.

The spelling of 513355538 in words is "five hundred thirteen million, three hundred fifty-five thousand, five hundred thirty-eight".