512040169 has 4 divisors (see below), whose sum is σ = 512120196. Its totient is φ = 511960144.

The previous prime is 512040127. The next prime is 512040181. The reversal of 512040169 is 961040215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961040215 = 5 ⋅192208043.

It can be written as a sum of positive squares in 2 ways, for example, as 420742144 + 91298025 = 20512^2 + 9555^2 .

It is a cyclic number.

It is not a de Polignac number, because 512040169 - 2¹³ = 512031977 is a prime.

It is a super-2 number, since 2×512040169² = 524370269339097122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512040869) 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, 29494 + ... + 43519.

It is an arithmetic number, because the mean of its divisors is an integer number (128030049).

Almost surely, 2^512040169 is an apocalyptic number.

It is an amenable number.

512040169 is a deficient number, since it is larger than the sum of its proper divisors (80027).

512040169 is an equidigital number, since it uses as much as digits as its factorization.

512040169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80026.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 512040169 is about 22628.3045984448. The cubic root of 512040169 is about 800.0209208071.

The spelling of 512040169 in words is "five hundred twelve million, forty thousand, one hundred sixty-nine".