512782197 has 4 divisors (see below), whose sum is σ = 683709600. Its totient is φ = 341854796.

The previous prime is 512782183. The next prime is 512782211. The reversal of 512782197 is 791287215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (512782183) and next prime (512782211).

It is a cyclic number.

It is not a de Polignac number, because 512782197 - 2⁷ = 512782069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512782097) 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 3 ways as a sum of consecutive naturals, for example, 85463697 + ... + 85463702.

It is an arithmetic number, because the mean of its divisors is an integer number (170927400).

Almost surely, 2^512782197 is an apocalyptic number.

It is an amenable number.

512782197 is a deficient number, since it is larger than the sum of its proper divisors (170927403).

512782197 is a wasteful number, since it uses less digits than its factorization.

512782197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170927402.

The product of its digits is 70560, while the sum is 42.

The square root of 512782197 is about 22644.6946766787. The cubic root of 512782197 is about 800.4071869841.

The spelling of 512782197 in words is "five hundred twelve million, seven hundred eighty-two thousand, one hundred ninety-seven".