512653421 has 8 divisors (see below), whose sum is σ = 616726080. Its totient is φ = 416289888.

The previous prime is 512653399. The next prime is 512653447. The reversal of 512653421 is 124356215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-512653421 is a prime.

It is a super-5 number, since 5×512653421⁵ (a number of 45 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512653451) 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 7 ways as a sum of consecutive naturals, for example, 1927136 + ... + 1927401.

It is an arithmetic number, because the mean of its divisors is an integer number (77090760).

Almost surely, 2^512653421 is an apocalyptic number.

It is an amenable number.

512653421 is a deficient number, since it is larger than the sum of its proper divisors (104072659).

512653421 is a wasteful number, since it uses less digits than its factorization.

512653421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854563.

The product of its digits is 7200, while the sum is 29.

The square root of 512653421 is about 22641.8510948200. The cubic root of 512653421 is about 800.3401787650.

The spelling of 512653421 in words is "five hundred twelve million, six hundred fifty-three thousand, four hundred twenty-one".