512422857 has 24 divisors (see below), whose sum is σ = 784588896. Its totient is φ = 321158016.

The previous prime is 512422853. The next prime is 512422903. The reversal of 512422857 is 758224215.

It is a happy number.

It is not a de Polignac number, because 512422857 - 2² = 512422853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512422853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217158 + ... + 219504.

It is an arithmetic number, because the mean of its divisors is an integer number (32691204).

Almost surely, 2^512422857 is an apocalyptic number.

It is an amenable number.

512422857 is a deficient number, since it is larger than the sum of its proper divisors (272166039).

512422857 is a wasteful number, since it uses less digits than its factorization.

512422857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797 (or 3794 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 512422857 is about 22636.7589773801. The cubic root of 512422857 is about 800.2201774177.

The spelling of 512422857 in words is "five hundred twelve million, four hundred twenty-two thousand, eight hundred fifty-seven".