53280666 has 48 divisors (see below), whose sum is σ = 122994144. Its totient is φ = 17274384.

The previous prime is 53280653. The next prime is 53280671. The reversal of 53280666 is 66608235.

It is a self number, because there is not a number n which added to its sum of digits gives 53280666.

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 23 ways as a sum of consecutive naturals, for example, 16501 + ... + 19463.

It is an arithmetic number, because the mean of its divisors is an integer number (2562378).

Almost surely, 2^53280666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53280666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61497072).

53280666 is an abundant number, since it is smaller than the sum of its proper divisors (69713478).

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

53280666 is a wasteful number, since it uses less digits than its factorization.

53280666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 53280666 is about 7299.3606569343. The cubic root of 53280666 is about 376.2904660987.

The spelling of 53280666 in words is "fifty-three million, two hundred eighty thousand, six hundred sixty-six".