516556241 has 4 divisors (see below), whose sum is σ = 539015232. Its totient is φ = 494097252.

The previous prime is 516556213. The next prime is 516556259. The reversal of 516556241 is 142655615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142655615 = 5 ⋅28531123.

It is a cyclic number.

It is not a de Polignac number, because 516556241 - 2⁶ = 516556177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516556141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11229461 + ... + 11229506.

It is an arithmetic number, because the mean of its divisors is an integer number (134753808).

Almost surely, 2^516556241 is an apocalyptic number.

It is an amenable number.

516556241 is a deficient number, since it is larger than the sum of its proper divisors (22458991).

516556241 is a wasteful number, since it uses less digits than its factorization.

516556241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22458990.

The product of its digits is 36000, while the sum is 35.

The square root of 516556241 is about 22727.8736576918. The cubic root of 516556241 is about 802.3660376213.

The spelling of 516556241 in words is "five hundred sixteen million, five hundred fifty-six thousand, two hundred forty-one".