512052421 has 4 divisors (see below), whose sum is σ = 512794144. Its totient is φ = 511310700.

The previous prime is 512052419. The next prime is 512052467. The reversal of 512052421 is 124250215.

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 a cyclic number.

It is not a de Polignac number, because 512052421 - 2¹ = 512052419 is a prime.

It is a super-2 number, since 2×512052421² = 524395363703922482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512052392 and 512052401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512052521) 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, 369825 + ... + 371206.

It is an arithmetic number, because the mean of its divisors is an integer number (128198536).

Almost surely, 2^512052421 is an apocalyptic number.

It is an amenable number.

512052421 is a deficient number, since it is larger than the sum of its proper divisors (741723).

512052421 is an equidigital number, since it uses as much as digits as its factorization.

512052421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741722.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 512052421 is about 22628.5753197147. The cubic root of 512052421 is about 800.0273016724.

The spelling of 512052421 in words is "five hundred twelve million, fifty-two thousand, four hundred twenty-one".