516661153 has 4 divisors (see below), whose sum is σ = 516734100. Its totient is φ = 516588208.

The previous prime is 516661151. The next prime is 516661169. The reversal of 516661153 is 351166615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351166615 = 5 ⋅70233323.

It can be written as a sum of positive squares in 2 ways, for example, as 144672784 + 371988369 = 12028^2 + 19287^2 .

It is a cyclic number.

It is not a de Polignac number, because 516661153 - 2¹ = 516661151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516661151) 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, 24550 + ... + 40447.

It is an arithmetic number, because the mean of its divisors is an integer number (129183525).

Almost surely, 2^516661153 is an apocalyptic number.

It is an amenable number.

516661153 is a deficient number, since it is larger than the sum of its proper divisors (72947).

516661153 is an equidigital number, since it uses as much as digits as its factorization.

516661153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72946.

The product of its digits is 16200, while the sum is 34.

The square root of 516661153 is about 22730.1815434897. The cubic root of 516661153 is about 802.4203538286.

The spelling of 516661153 in words is "five hundred sixteen million, six hundred sixty-one thousand, one hundred fifty-three".