511430422 has 4 divisors (see below), whose sum is σ = 767145636. Its totient is φ = 255715210.

The previous prime is 511430411. The next prime is 511430441. The reversal of 511430422 is 224034115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224034115 = 5 ⋅44806823.

It is a super-2 number, since 2×511430422² = 523122153094196168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511430393 and 511430402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127857604 + ... + 127857607.

It is an arithmetic number, because the mean of its divisors is an integer number (191786409).

Almost surely, 2^511430422 is an apocalyptic number.

511430422 is a deficient number, since it is larger than the sum of its proper divisors (255715214).

511430422 is a wasteful number, since it uses less digits than its factorization.

511430422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255715213.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 511430422 is about 22614.8274811019. The cubic root of 511430422 is about 799.7032347182.

Adding to 511430422 its reverse (224034115), we get a palindrome (735464537).

The spelling of 511430422 in words is "five hundred eleven million, four hundred thirty thousand, four hundred twenty-two".