516221057 has 8 divisors (see below), whose sum is σ = 568318080. Its totient is φ = 464985360.

The previous prime is 516221047. The next prime is 516221059. The reversal of 516221057 is 750122615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516221057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516221059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214073 + ... + 216470.

It is an arithmetic number, because the mean of its divisors is an integer number (71039760).

Almost surely, 2^516221057 is an apocalyptic number.

It is an amenable number.

516221057 is a deficient number, since it is larger than the sum of its proper divisors (52097023).

516221057 is a wasteful number, since it uses less digits than its factorization.

516221057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430663.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 516221057 is about 22720.4986080852. The cubic root of 516221057 is about 802.1924531351.

The spelling of 516221057 in words is "five hundred sixteen million, two hundred twenty-one thousand, fifty-seven".