516056421 has 16 divisors (see below), whose sum is σ = 723873600. Its totient is φ = 326540928.

The previous prime is 516056419. The next prime is 516056441. The reversal of 516056421 is 124650615.

It is not a de Polignac number, because 516056421 - 2¹ = 516056419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516056441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45136 + ... + 55401.

It is an arithmetic number, because the mean of its divisors is an integer number (45242100).

Almost surely, 2^516056421 is an apocalyptic number.

It is an amenable number.

516056421 is a deficient number, since it is larger than the sum of its proper divisors (207817179).

516056421 is a wasteful number, since it uses less digits than its factorization.

516056421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100628.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 516056421 is about 22716.8752472694. The cubic root of 516056421 is about 802.1071642215.

The spelling of 516056421 in words is "five hundred sixteen million, fifty-six thousand, four hundred twenty-one".