53116666 has 16 divisors (see below), whose sum is σ = 84432960. Its totient is φ = 24991200.

The previous prime is 53116649. The next prime is 53116673. The reversal of 53116666 is 66661135.

53116666 = 1663² + 1664² + ... + 1681².

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110 + ... + 10366.

It is an arithmetic number, because the mean of its divisors is an integer number (5277060).

Almost surely, 2^53116666 is an apocalyptic number.

53116666 is a deficient number, since it is larger than the sum of its proper divisors (31316294).

53116666 is a wasteful number, since it uses less digits than its factorization.

53116666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9429.

The product of its digits is 19440, while the sum is 34.

The square root of 53116666 is about 7288.1181384497. The cubic root of 53116666 is about 375.9039903122.

The spelling of 53116666 in words is "fifty-three million, one hundred sixteen thousand, six hundred sixty-six".