513454891 has 8 divisors (see below), whose sum is σ = 536729600. Its totient is φ = 490599720.

The previous prime is 513454871. The next prime is 513454901. The reversal of 513454891 is 198454315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513454891 - 2⁷ = 513454763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513454861) 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, 102381 + ... + 107278.

It is an arithmetic number, because the mean of its divisors is an integer number (67091200).

Almost surely, 2^513454891 is an apocalyptic number.

513454891 is a deficient number, since it is larger than the sum of its proper divisors (23274709).

513454891 is a wasteful number, since it uses less digits than its factorization.

513454891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209769.

The product of its digits is 86400, while the sum is 40.

The square root of 513454891 is about 22659.5430448189. The cubic root of 513454891 is about 800.7570391179.

It can be divided in two parts, 5134 and 54891, that added together give a square (60025 = 245²).

The spelling of 513454891 in words is "five hundred thirteen million, four hundred fifty-four thousand, eight hundred ninety-one".