511674421 has 4 divisors (see below), whose sum is σ = 512272332. Its totient is φ = 511076512.

The previous prime is 511674419. The next prime is 511674431. The reversal of 511674421 is 124476115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 468246321 + 43428100 = 21639^2 + 6590^2 .

It is a cyclic number.

It is not a de Polignac number, because 511674421 - 2¹ = 511674419 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 (511674431) 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 3 ways as a sum of consecutive naturals, for example, 297670 + ... + 299383.

It is an arithmetic number, because the mean of its divisors is an integer number (128068083).

Almost surely, 2^511674421 is an apocalyptic number.

It is an amenable number.

511674421 is a deficient number, since it is larger than the sum of its proper divisors (597911).

511674421 is an equidigital number, since it uses as much as digits as its factorization.

511674421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597910.

The product of its digits is 6720, while the sum is 31.

The square root of 511674421 is about 22620.2215064309. The cubic root of 511674421 is about 799.8303916480.

The spelling of 511674421 in words is "five hundred eleven million, six hundred seventy-four thousand, four hundred twenty-one".