513053778 has 64 divisors (see below), whose sum is σ = 1138655232. Its totient is φ = 153288960.

The previous prime is 513053777. The next prime is 513053791. The reversal of 513053778 is 877350315.

It is not an unprimeable number, because it can be changed into a prime (513053777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898233 + ... + 898803.

It is an arithmetic number, because the mean of its divisors is an integer number (17791488).

Almost surely, 2^513053778 is an apocalyptic number.

513053778 is an abundant number, since it is smaller than the sum of its proper divisors (625601454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513053778 is a wasteful number, since it uses less digits than its factorization.

513053778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 513053778 is about 22650.6904530524. The cubic root of 513053778 is about 800.5484666029.

The spelling of 513053778 in words is "five hundred thirteen million, fifty-three thousand, seven hundred seventy-eight".