513828971 has 4 divisors (see below), whose sum is σ = 514383000. Its totient is φ = 513274944.

The previous prime is 513828949. The next prime is 513828977. The reversal of 513828971 is 179828315.

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

It is a cyclic number.

It is not a de Polignac number, because 513828971 - 2⁶ = 513828907 is a prime.

It is a super-2 number, since 2×513828971² = 528040422877837682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513828977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275621 + ... + 277478.

It is an arithmetic number, because the mean of its divisors is an integer number (128595750).

Almost surely, 2^513828971 is an apocalyptic number.

513828971 is a deficient number, since it is larger than the sum of its proper divisors (554029).

513828971 is an equidigital number, since it uses as much as digits as its factorization.

513828971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554028.

The product of its digits is 120960, while the sum is 44.

The square root of 513828971 is about 22667.7959007928. The cubic root of 513828971 is about 800.9514570258.

The spelling of 513828971 in words is "five hundred thirteen million, eight hundred twenty-eight thousand, nine hundred seventy-one".