513072169 has 4 divisors (see below), whose sum is σ = 517867344. Its totient is φ = 508276996.

The previous prime is 513072167. The next prime is 513072211. The reversal of 513072169 is 961270315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513072169 - 2¹ = 513072167 is a prime.

It is a super-2 number, since 2×513072169² = 526486101204729122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513072167) 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, 2397427 + ... + 2397640.

It is an arithmetic number, because the mean of its divisors is an integer number (129466836).

Almost surely, 2^513072169 is an apocalyptic number.

It is an amenable number.

513072169 is a deficient number, since it is larger than the sum of its proper divisors (4795175).

513072169 is a wasteful number, since it uses less digits than its factorization.

513072169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795174.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 513072169 is about 22651.0964193789. The cubic root of 513072169 is about 800.5580320140.

The spelling of 513072169 in words is "five hundred thirteen million, seventy-two thousand, one hundred sixty-nine".