516527221 has 8 divisors (see below), whose sum is σ = 593409024. Its totient is φ = 440418480.

The previous prime is 516527203. The next prime is 516527243. The reversal of 516527221 is 122725615.

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 516527221 - 2⁵ = 516527189 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 (516527621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191830 + ... + 194503.

It is an arithmetic number, because the mean of its divisors is an integer number (74176128).

Almost surely, 2^516527221 is an apocalyptic number.

It is an amenable number.

516527221 is a deficient number, since it is larger than the sum of its proper divisors (76881803).

516527221 is a wasteful number, since it uses less digits than its factorization.

516527221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386531.

The product of its digits is 8400, while the sum is 31.

The square root of 516527221 is about 22727.2352256054. The cubic root of 516527221 is about 802.3510117657.

The spelling of 516527221 in words is "five hundred sixteen million, five hundred twenty-seven thousand, two hundred twenty-one".