512789945 has 16 divisors (see below), whose sum is σ = 652993920. Its totient is φ = 385739904.

The previous prime is 512789933. The next prime is 512789951. The reversal of 512789945 is 549987215.

It is a cyclic number.

It is not a de Polignac number, because 512789945 - 2¹⁶ = 512724409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512789893 and 512789902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31004 + ... + 44573.

It is an arithmetic number, because the mean of its divisors is an integer number (40812120).

Almost surely, 2^512789945 is an apocalyptic number.

It is an amenable number.

512789945 is a deficient number, since it is larger than the sum of its proper divisors (140203975).

512789945 is a wasteful number, since it uses less digits than its factorization.

512789945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75664.

The product of its digits is 907200, while the sum is 50.

The square root of 512789945 is about 22644.8657536317. The cubic root of 512789945 is about 800.4112182757.

The spelling of 512789945 in words is "five hundred twelve million, seven hundred eighty-nine thousand, nine hundred forty-five".