52813866 has 48 divisors (see below), whose sum is σ = 130113216. Its totient is φ = 14200704.

The previous prime is 52813841. The next prime is 52813903. The reversal of 52813866 is 66831825.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 286 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (2710692).

Almost surely, 2^52813866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52813866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65056608).

52813866 is an abundant number, since it is smaller than the sum of its proper divisors (77299350).

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

52813866 is a wasteful number, since it uses less digits than its factorization.

52813866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10603 (or 10596 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 52813866 is about 7267.3149099237. The cubic root of 52813866 is about 375.1883285149.

The spelling of 52813866 in words is "fifty-two million, eight hundred thirteen thousand, eight hundred sixty-six".