512978081 has 32 divisors (see below), whose sum is σ = 652658688. Its totient is φ = 391616640.

The previous prime is 512978051. The next prime is 512978087. The reversal of 512978081 is 180879215.

It is a cyclic number.

It is not a de Polignac number, because 512978081 - 2¹⁴ = 512961697 is a prime.

It is a super-2 number, since 2×512978081² = 526293023172885122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (512978087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1478150 + ... + 1478496.

It is an arithmetic number, because the mean of its divisors is an integer number (20395584).

Almost surely, 2^512978081 is an apocalyptic number.

It is an amenable number.

512978081 is a deficient number, since it is larger than the sum of its proper divisors (139680607).

512978081 is a wasteful number, since it uses less digits than its factorization.

512978081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 512978081 is about 22649.0194268979. The cubic root of 512978081 is about 800.5090931490.

The spelling of 512978081 in words is "five hundred twelve million, nine hundred seventy-eight thousand, eighty-one".