512072947 has 4 divisors (see below), whose sum is σ = 516604680. Its totient is φ = 507541216.

The previous prime is 512072921. The next prime is 512072993. The reversal of 512072947 is 749270215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 512072947 - 2¹⁹ = 511548659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512072747) 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, 2265697 + ... + 2265922.

It is an arithmetic number, because the mean of its divisors is an integer number (129151170).

Almost surely, 2^512072947 is an apocalyptic number.

512072947 is a deficient number, since it is larger than the sum of its proper divisors (4531733).

512072947 is a wasteful number, since it uses less digits than its factorization.

512072947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531732.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 512072947 is about 22629.0288567583. The cubic root of 512072947 is about 800.0379914250.

The spelling of 512072947 in words is "five hundred twelve million, seventy-two thousand, nine hundred forty-seven".