512145461 has 8 divisors (see below), whose sum is σ = 516923544. Its totient is φ = 507386880.

The previous prime is 512145409. The next prime is 512145467. The reversal of 512145461 is 164541215.

It can be written as a sum of positive squares in 4 ways, for example, as 153611236 + 358534225 = 12394^2 + 18935^2 .

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 512145461 - 2²⁶ = 445036597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512145467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50801 + ... + 60041.

It is an arithmetic number, because the mean of its divisors is an integer number (64615443).

Almost surely, 2^512145461 is an apocalyptic number.

It is an amenable number.

512145461 is a deficient number, since it is larger than the sum of its proper divisors (4778083).

512145461 is a wasteful number, since it uses less digits than its factorization.

512145461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751.

The product of its digits is 4800, while the sum is 29.

The square root of 512145461 is about 22630.6310340653. The cubic root of 512145461 is about 800.0757537640.

Adding to 512145461 its reverse (164541215), we get a palindrome (676686676).

The spelling of 512145461 in words is "five hundred twelve million, one hundred forty-five thousand, four hundred sixty-one".