53103666 has 64 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 13676160.

The previous prime is 53103623. The next prime is 53103671. The reversal of 53103666 is 66630135.

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 31 ways as a sum of consecutive naturals, for example, 62875 + ... + 63713.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^53103666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53103666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66769920).

53103666 is an abundant number, since it is smaller than the sum of its proper divisors (80436174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53103666 is a wasteful number, since it uses less digits than its factorization.

53103666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 53103666 is about 7287.2262212724. The cubic root of 53103666 is about 375.8733210266.

The spelling of 53103666 in words is "fifty-three million, one hundred three thousand, six hundred sixty-six".