516154321 has 16 divisors (see below), whose sum is σ = 531980800. Its totient is φ = 500655168.

The previous prime is 516154313. The next prime is 516154337. The reversal of 516154321 is 123451615.

It is a cyclic number.

It is not a de Polignac number, because 516154321 - 2³ = 516154313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 516154321.

It is not an unprimeable number, because it can be changed into a prime (516154021) 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 15 ways as a sum of consecutive naturals, for example, 1863235 + ... + 1863511.

It is an arithmetic number, because the mean of its divisors is an integer number (33248800).

Almost surely, 2^516154321 is an apocalyptic number.

It is an amenable number.

516154321 is a deficient number, since it is larger than the sum of its proper divisors (15826479).

516154321 is a wasteful number, since it uses less digits than its factorization.

516154321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its digits is 3600, while the sum is 28.

The square root of 516154321 is about 22719.0299308751. The cubic root of 516154321 is about 802.1578830467.

The spelling of 516154321 in words is "five hundred sixteen million, one hundred fifty-four thousand, three hundred twenty-one".