513123355 has 4 divisors (see below), whose sum is σ = 615748032. Its totient is φ = 410498680.

The previous prime is 513123341. The next prime is 513123371. The reversal of 513123355 is 553321315.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 513123355 - 2⁷ = 513123227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51312331 + ... + 51312340.

It is an arithmetic number, because the mean of its divisors is an integer number (153937008).

Almost surely, 2^513123355 is an apocalyptic number.

513123355 is a deficient number, since it is larger than the sum of its proper divisors (102624677).

513123355 is a wasteful number, since it uses less digits than its factorization.

513123355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102624676.

The product of its digits is 6750, while the sum is 28.

The square root of 513123355 is about 22652.2262702808. The cubic root of 513123355 is about 800.5846533507.

The spelling of 513123355 in words is "five hundred thirteen million, one hundred twenty-three thousand, three hundred fifty-five".