516654505 has 4 divisors (see below), whose sum is σ = 619985412. Its totient is φ = 413323600.

The previous prime is 516654493. The next prime is 516654511. The reversal of 516654505 is 505456615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59892121 + 456762384 = 7739^2 + 21372^2 .

It is not a de Polignac number, because 516654505 - 2⁵ = 516654473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51665446 + ... + 51665455.

It is an arithmetic number, because the mean of its divisors is an integer number (154996353).

Almost surely, 2^516654505 is an apocalyptic number.

It is an amenable number.

516654505 is a deficient number, since it is larger than the sum of its proper divisors (103330907).

516654505 is a wasteful number, since it uses less digits than its factorization.

516654505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103330906.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 516654505 is about 22730.0353057359. The cubic root of 516654505 is about 802.4169121703.

The spelling of 516654505 in words is "five hundred sixteen million, six hundred fifty-four thousand, five hundred five".