513840855 has 32 divisors (see below), whose sum is σ = 898656768. Its totient is φ = 248643200.

The previous prime is 513840851. The next prime is 513840869. The reversal of 513840855 is 558048315.

It is not a de Polignac number, because 513840855 - 2² = 513840851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513840851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89110 + ... + 94700.

It is an arithmetic number, because the mean of its divisors is an integer number (28083024).

Almost surely, 2^513840855 is an apocalyptic number.

513840855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

513840855 is a deficient number, since it is larger than the sum of its proper divisors (384815913).

513840855 is a wasteful number, since it uses less digits than its factorization.

513840855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167.

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 513840855 is about 22668.0580332767. The cubic root of 513840855 is about 800.9576318649.

The spelling of 513840855 in words is "five hundred thirteen million, eight hundred forty thousand, eight hundred fifty-five".