516055561 has 32 divisors (see below), whose sum is σ = 642942720. Its totient is φ = 404352000.

The previous prime is 516055549. The next prime is 516055583. The reversal of 516055561 is 165550615.

It is a cyclic number.

It is not a de Polignac number, because 516055561 - 2⁷ = 516055433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516055511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550285 + ... + 551221.

It is an arithmetic number, because the mean of its divisors is an integer number (20091960).

Almost surely, 2^516055561 is an apocalyptic number.

It is an amenable number.

516055561 is a deficient number, since it is larger than the sum of its proper divisors (126887159).

516055561 is a wasteful number, since it uses less digits than its factorization.

516055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 516055561 is about 22716.8563186018. The cubic root of 516055561 is about 802.1067186549.

The spelling of 516055561 in words is "five hundred sixteen million, fifty-five thousand, five hundred sixty-one".