512150689 has 4 divisors (see below), whose sum is σ = 512205124. Its totient is φ = 512096256.

The previous prime is 512150663. The next prime is 512150731. The reversal of 512150689 is 986051215.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986051215 = 5 ⋅197210243.

It can be written as a sum of positive squares in 2 ways, for example, as 189337600 + 322813089 = 13760^2 + 17967^2 .

It is a 3-Lehmer number, since φ(512150689) divides (512150689-1)³.

It is a cyclic number.

It is not a de Polignac number, because 512150689 - 2¹¹ = 512148641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512150609) 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, 9072 + ... + 33265.

It is an arithmetic number, because the mean of its divisors is an integer number (128051281).

Almost surely, 2^512150689 is an apocalyptic number.

512150689 is the 12097-th nonagonal number.

It is an amenable number.

512150689 is a deficient number, since it is larger than the sum of its proper divisors (54435).

512150689 is a wasteful number, since it uses less digits than its factorization.

512150689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54434.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 512150689 is about 22630.7465409341. The cubic root of 512150689 is about 800.0784761558.

The spelling of 512150689 in words is "five hundred twelve million, one hundred fifty thousand, six hundred eighty-nine".