512421645 has 16 divisors (see below), whose sum is σ = 820156032. Its totient is φ = 273197760.

The previous prime is 512421629. The next prime is 512421647. The reversal of 512421645 is 546124215.

It is not a de Polignac number, because 512421645 - 2⁴ = 512421629 is a prime.

It is a super-3 number, since 3×512421645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512421647) 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 15 ways as a sum of consecutive naturals, for example, 78040 + ... + 84350.

It is an arithmetic number, because the mean of its divisors is an integer number (51259752).

Almost surely, 2^512421645 is an apocalyptic number.

It is an amenable number.

512421645 is a deficient number, since it is larger than the sum of its proper divisors (307734387).

512421645 is a wasteful number, since it uses less digits than its factorization.

512421645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11732.

The product of its digits is 9600, while the sum is 30.

The square root of 512421645 is about 22636.7322067475. The cubic root of 512421645 is about 800.2195465145.

The spelling of 512421645 in words is "five hundred twelve million, four hundred twenty-one thousand, six hundred forty-five".