516541621 has 8 divisors (see below), whose sum is σ = 520295904. Its totient is φ = 512794800.

The previous prime is 516541603. The next prime is 516541631. The reversal of 516541621 is 126145615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516541621 - 2⁵ = 516541589 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 (516541631) 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 7 ways as a sum of consecutive naturals, for example, 270771 + ... + 272671.

It is an arithmetic number, because the mean of its divisors is an integer number (65036988).

Almost surely, 2^516541621 is an apocalyptic number.

It is an amenable number.

516541621 is a deficient number, since it is larger than the sum of its proper divisors (3754283).

516541621 is a wasteful number, since it uses less digits than its factorization.

516541621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731.

The product of its digits is 7200, while the sum is 31.

The square root of 516541621 is about 22727.5520239202. The cubic root of 516541621 is about 802.3584678085.

The spelling of 516541621 in words is "five hundred sixteen million, five hundred forty-one thousand, six hundred twenty-one".