516660001 has 16 divisors (see below), whose sum is σ = 608650560. Its totient is φ = 432371520.

The previous prime is 516659987. The next prime is 516660013. The reversal of 516660001 is 100066615.

516660001 = T₈₉₀₉ + T₈₉₁₀ + ... + T₈₉₂₁.

It is a cyclic number.

It is not a de Polignac number, because 516660001 - 2²⁷ = 382442273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516660061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49431 + ... + 58963.

It is an arithmetic number, because the mean of its divisors is an integer number (38040660).

Almost surely, 2^516660001 is an apocalyptic number.

It is an amenable number.

516660001 is a deficient number, since it is larger than the sum of its proper divisors (91990559).

516660001 is a wasteful number, since it uses less digits than its factorization.

516660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9936.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 516660001 is about 22730.1562027189. The cubic root of 516660001 is about 802.4197574423.

The spelling of 516660001 in words is "five hundred sixteen million, six hundred sixty thousand, one".