53315666 has 8 divisors (see below), whose sum is σ = 80127984. Its totient is φ = 26606340.

The previous prime is 53315651. The next prime is 53315677. The reversal of 53315666 is 66651335.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24440 + ... + 26531.

It is an arithmetic number, because the mean of its divisors is an integer number (10015998).

Almost surely, 2^53315666 is an apocalyptic number.

53315666 is a deficient number, since it is larger than the sum of its proper divisors (26812318).

53315666 is a wasteful number, since it uses less digits than its factorization.

53315666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51496.

The product of its digits is 48600, while the sum is 35.

The square root of 53315666 is about 7301.7577335872. The cubic root of 53315666 is about 376.3728429690.

The spelling of 53315666 in words is "fifty-three million, three hundred fifteen thousand, six hundred sixty-six".