512145505 has 8 divisors (see below), whose sum is σ = 614880000. Its totient is φ = 409512816.

The previous prime is 512145503. The next prime is 512145509. The reversal of 512145505 is 505541215.

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 512145505 - 2¹ = 512145503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512145503) 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, 13905 + ... + 34894.

It is an arithmetic number, because the mean of its divisors is an integer number (76860000).

Almost surely, 2^512145505 is an apocalyptic number.

It is an amenable number.

512145505 is a deficient number, since it is larger than the sum of its proper divisors (102734495).

512145505 is a wasteful number, since it uses less digits than its factorization.

512145505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50903.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 512145505 is about 22630.6320061990. The cubic root of 512145505 is about 800.0757766763.

It can be divided in two parts, 51 and 2145505, that added together give a triangular number (2145556 = T₂₀₇₁).

The spelling of 512145505 in words is "five hundred twelve million, one hundred forty-five thousand, five hundred five".