512120447 has 4 divisors (see below), whose sum is σ = 512603280. Its totient is φ = 511637616.

The previous prime is 512120443. The next prime is 512120473. The reversal of 512120447 is 744021215.

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 512120447 - 2² = 512120443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512120443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239822 + ... + 241947.

It is an arithmetic number, because the mean of its divisors is an integer number (128150820).

Almost surely, 2^512120447 is an apocalyptic number.

512120447 is a deficient number, since it is larger than the sum of its proper divisors (482833).

512120447 is a wasteful number, since it uses less digits than its factorization.

512120447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482832.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 512120447 is about 22630.0783692854. The cubic root of 512120447 is about 800.0627278939.

The spelling of 512120447 in words is "five hundred twelve million, one hundred twenty thousand, four hundred forty-seven".